/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-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:17:25,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:17:25,393 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 23:17:25,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:17:25,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:17:25,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:17:25,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:17:25,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:17:25,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:17:25,424 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:17:25,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:17:25,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:17:25,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:17:25,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:17:25,424 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:17:25,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:17:25,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:17:25,427 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:17:25,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:17:25,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:17:25,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:17:25,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:17:25,428 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 23:17:25,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:17:25,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:17:25,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:17:25,659 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:17:25,660 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:17:25,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2025-04-13 23:17:26,910 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab6c20cf/8d167e45ebb34f40a8594b2dc748f9f3/FLAGb8a3d3a41 [2025-04-13 23:17:27,087 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:17:27,087 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2025-04-13 23:17:27,102 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab6c20cf/8d167e45ebb34f40a8594b2dc748f9f3/FLAGb8a3d3a41 [2025-04-13 23:17:27,910 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab6c20cf/8d167e45ebb34f40a8594b2dc748f9f3 [2025-04-13 23:17:27,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:17:27,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:17:27,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:17:27,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:17:27,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:17:27,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:17:27" (1/1) ... [2025-04-13 23:17:27,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301361e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:27, skipping insertion in model container [2025-04-13 23:17:27,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:17:27" (1/1) ... [2025-04-13 23:17:27,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:17:28,068 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2464,2477] [2025-04-13 23:17:28,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:17:28,079 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:17:28,097 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2464,2477] [2025-04-13 23:17:28,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:17:28,108 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:17:28,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28 WrapperNode [2025-04-13 23:17:28,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:17:28,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:17:28,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:17:28,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:17:28,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,134 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-04-13 23:17:28,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:17:28,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:17:28,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:17:28,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:17:28,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,160 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 23:17:28,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:17:28,168 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:17:28,168 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:17:28,168 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:17:28,168 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (1/1) ... [2025-04-13 23:17:28,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:17:28,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:28,189 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 23:17:28,191 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 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 23:17:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 23:17:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:17:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:17:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:17:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:17:28,208 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 23:17:28,278 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:17:28,279 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:17:28,437 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:17:28,437 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:17:28,438 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:17:28,613 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:17:28,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:17:28 BoogieIcfgContainer [2025-04-13 23:17:28,613 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:17:28,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:17:28,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:17:28,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:17:28,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:17:27" (1/3) ... [2025-04-13 23:17:28,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e78467d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:17:28, skipping insertion in model container [2025-04-13 23:17:28,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:17:28" (2/3) ... [2025-04-13 23:17:28,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e78467d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:17:28, skipping insertion in model container [2025-04-13 23:17:28,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:17:28" (3/3) ... [2025-04-13 23:17:28,622 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2025-04-13 23:17:28,632 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:17:28,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-queue.wvr.c that has 3 procedures, 19 locations, 19 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:17:28,633 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:17:28,671 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 23:17:28,693 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 56 flow [2025-04-13 23:17:28,704 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:28,722 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:17:28,733 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;@2b920633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:17:28,733 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:17:28,735 INFO L278 IsEmpty]: Start isEmpty. Operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:28,739 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 23:17:28,739 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:28,739 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:28,740 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 23:17:28,743 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash -995776034, now seen corresponding path program 1 times [2025-04-13 23:17:28,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:28,747 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854568557] [2025-04-13 23:17:28,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:17:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:28,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 23:17:28,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 23:17:28,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:28,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:28,972 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 23:17:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:28,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854568557] [2025-04-13 23:17:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854568557] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:17:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:17:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 23:17:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261169141] [2025-04-13 23:17:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:17:28,977 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:17:28,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:28,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:17:28,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:17:28,993 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:29,049 INFO L93 Difference]: Finished difference Result 78 states and 178 transitions. [2025-04-13 23:17:29,050 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:17:29,051 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 23:17:29,051 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:29,058 INFO L225 Difference]: With dead ends: 78 [2025-04-13 23:17:29,058 INFO L226 Difference]: Without dead ends: 67 [2025-04-13 23:17:29,061 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:17:29,064 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:29,064 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:17:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-13 23:17:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2025-04-13 23:17:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 132 transitions. [2025-04-13 23:17:29,092 INFO L79 Accepts]: Start accepts. Automaton has 58 states and 132 transitions. Word has length 13 [2025-04-13 23:17:29,092 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:29,093 INFO L485 AbstractCegarLoop]: Abstraction has 58 states and 132 transitions. [2025-04-13 23:17:29,093 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,094 INFO L278 IsEmpty]: Start isEmpty. Operand 58 states and 132 transitions. [2025-04-13 23:17:29,094 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:17:29,094 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:29,094 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:29,094 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:17:29,094 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 23:17:29,095 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 802620544, now seen corresponding path program 1 times [2025-04-13 23:17:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:29,095 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968453024] [2025-04-13 23:17:29,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:17:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:29,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 23:17:29,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:17:29,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:29,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:29,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:29,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968453024] [2025-04-13 23:17:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968453024] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:17:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:17:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 23:17:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503307950] [2025-04-13 23:17:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:17:29,191 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:17:29,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:29,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:17:29,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:17:29,192 INFO L87 Difference]: Start difference. First operand 58 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:29,229 INFO L93 Difference]: Finished difference Result 110 states and 253 transitions. [2025-04-13 23:17:29,229 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:17:29,229 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 23:17:29,229 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:29,230 INFO L225 Difference]: With dead ends: 110 [2025-04-13 23:17:29,230 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 23:17:29,230 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:17:29,231 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:29,231 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:17:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 23:17:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 23:17:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2318840579710146) internal successors, (154), 69 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2025-04-13 23:17:29,238 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 15 [2025-04-13 23:17:29,238 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:29,238 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2025-04-13 23:17:29,238 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,239 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2025-04-13 23:17:29,239 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 23:17:29,239 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:29,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:29,239 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:17:29,239 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 23:17:29,240 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 904825438, now seen corresponding path program 1 times [2025-04-13 23:17:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:29,240 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007417597] [2025-04-13 23:17:29,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:17:29,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:29,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 23:17:29,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 23:17:29,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:29,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:29,340 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 23:17:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:29,340 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007417597] [2025-04-13 23:17:29,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007417597] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:17:29,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:17:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:17:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225267469] [2025-04-13 23:17:29,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:17:29,341 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:17:29,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:29,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:17:29,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:17:29,342 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:29,383 INFO L93 Difference]: Finished difference Result 139 states and 307 transitions. [2025-04-13 23:17:29,383 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:17:29,383 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 23:17:29,384 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:29,384 INFO L225 Difference]: With dead ends: 139 [2025-04-13 23:17:29,384 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 23:17:29,384 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 23:17:29,385 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:29,385 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:17:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 23:17:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-04-13 23:17:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2142857142857144) internal successors, (155), 70 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 155 transitions. [2025-04-13 23:17:29,393 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 155 transitions. Word has length 17 [2025-04-13 23:17:29,393 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:29,393 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 155 transitions. [2025-04-13 23:17:29,393 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:29,393 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 155 transitions. [2025-04-13 23:17:29,394 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 23:17:29,394 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:29,394 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 23:17:29,394 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:17:29,395 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 23:17:29,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -580505969, now seen corresponding path program 1 times [2025-04-13 23:17:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:29,395 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940232732] [2025-04-13 23:17:29,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:17:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:29,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:17:29,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:17:29,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:29,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:29,812 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940232732] [2025-04-13 23:17:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940232732] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:29,812 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927205931] [2025-04-13 23:17:29,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:17:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:29,815 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 23:17:29,817 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 23:17:29,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:17:29,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:17:29,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:29,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:29,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 23:17:29,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:29,930 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 23:17:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:30,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:30,341 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-04-13 23:17:30,353 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:17:30,354 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-04-13 23:17:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927205931] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:30,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:30,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 23:17:30,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197151913] [2025-04-13 23:17:30,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:30,397 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 23:17:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:30,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 23:17:30,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-13 23:17:30,398 INFO L87 Difference]: Start difference. First operand 71 states and 155 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:30,623 INFO L93 Difference]: Finished difference Result 169 states and 378 transitions. [2025-04-13 23:17:30,623 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 23:17:30,623 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 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 23:17:30,623 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:30,624 INFO L225 Difference]: With dead ends: 169 [2025-04-13 23:17:30,624 INFO L226 Difference]: Without dead ends: 79 [2025-04-13 23:17:30,624 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:17:30,625 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 72 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:30,625 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 17 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:17:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-04-13 23:17:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2025-04-13 23:17:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.1971830985915495) internal successors, (156), 71 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 156 transitions. [2025-04-13 23:17:30,633 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 156 transitions. Word has length 18 [2025-04-13 23:17:30,633 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:30,633 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 156 transitions. [2025-04-13 23:17:30,634 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:30,634 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 156 transitions. [2025-04-13 23:17:30,634 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 23:17:30,634 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:30,634 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 23:17:30,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 23:17:30,840 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 23:17:30,840 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 23:17:30,840 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 618860670, now seen corresponding path program 2 times [2025-04-13 23:17:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:30,841 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35017015] [2025-04-13 23:17:30,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:17:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:30,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:17:30,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:17:30,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:17:30,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:31,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35017015] [2025-04-13 23:17:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35017015] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:31,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121859247] [2025-04-13 23:17:31,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:17:31,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:31,482 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 23:17:31,483 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 23:17:31,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:17:31,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:17:31,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:17:31,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:31,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 23:17:31,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:17:31,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:31,619 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:17:31,619 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 23:17:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:17:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121859247] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:31,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 9 [2025-04-13 23:17:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207069382] [2025-04-13 23:17:31,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:31,628 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 23:17:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:31,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 23:17:31,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:17:31,628 INFO L87 Difference]: Start difference. First operand 72 states and 156 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:31,869 INFO L93 Difference]: Finished difference Result 155 states and 343 transitions. [2025-04-13 23:17:31,869 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 23:17:31,869 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 23:17:31,869 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:31,870 INFO L225 Difference]: With dead ends: 155 [2025-04-13 23:17:31,870 INFO L226 Difference]: Without dead ends: 146 [2025-04-13 23:17:31,871 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:17:31,871 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 69 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:31,871 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 20 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:17:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-04-13 23:17:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 86. [2025-04-13 23:17:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.235294117647059) internal successors, (190), 85 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 190 transitions. [2025-04-13 23:17:31,878 INFO L79 Accepts]: Start accepts. Automaton has 86 states and 190 transitions. Word has length 19 [2025-04-13 23:17:31,879 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:31,879 INFO L485 AbstractCegarLoop]: Abstraction has 86 states and 190 transitions. [2025-04-13 23:17:31,879 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:31,879 INFO L278 IsEmpty]: Start isEmpty. Operand 86 states and 190 transitions. [2025-04-13 23:17:31,879 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 23:17:31,879 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:31,879 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:31,885 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 23:17:32,080 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:32,080 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 23:17:32,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1985299232, now seen corresponding path program 3 times [2025-04-13 23:17:32,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:32,081 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008317391] [2025-04-13 23:17:32,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:17:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:32,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 23:17:32,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:17:32,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:17:32,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:17:32,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:32,162 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008317391] [2025-04-13 23:17:32,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008317391] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:32,162 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551099795] [2025-04-13 23:17:32,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:17:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:32,164 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 23:17:32,166 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 23:17:32,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 23:17:32,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:17:32,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:17:32,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:32,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 23:17:32,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:17:32,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:17:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551099795] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:32,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:32,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2025-04-13 23:17:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051563251] [2025-04-13 23:17:32,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:32,315 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 23:17:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:32,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 23:17:32,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:17:32,315 INFO L87 Difference]: Start difference. First operand 86 states and 190 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:32,376 INFO L93 Difference]: Finished difference Result 196 states and 446 transitions. [2025-04-13 23:17:32,376 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:17:32,376 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 23:17:32,376 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:32,377 INFO L225 Difference]: With dead ends: 196 [2025-04-13 23:17:32,377 INFO L226 Difference]: Without dead ends: 156 [2025-04-13 23:17:32,378 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:17:32,378 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:32,378 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:17:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-04-13 23:17:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2025-04-13 23:17:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.3576642335766422) internal successors, (323), 137 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 323 transitions. [2025-04-13 23:17:32,415 INFO L79 Accepts]: Start accepts. Automaton has 138 states and 323 transitions. Word has length 21 [2025-04-13 23:17:32,415 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:32,415 INFO L485 AbstractCegarLoop]: Abstraction has 138 states and 323 transitions. [2025-04-13 23:17:32,415 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:32,415 INFO L278 IsEmpty]: Start isEmpty. Operand 138 states and 323 transitions. [2025-04-13 23:17:32,416 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 23:17:32,416 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:32,416 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:32,422 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 23:17:32,620 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:32,620 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 23:17:32,620 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1435262466, now seen corresponding path program 4 times [2025-04-13 23:17:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:32,621 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848429317] [2025-04-13 23:17:32,621 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:17:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:32,631 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 23:17:32,640 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 23:17:32,640 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:17:32,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:32,784 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 23:17:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:32,785 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848429317] [2025-04-13 23:17:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848429317] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:32,785 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583529649] [2025-04-13 23:17:32,785 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:17:32,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:32,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:32,787 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 23:17:32,788 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 23:17:32,836 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 23:17:32,856 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 23:17:32,856 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:17:32,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:32,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 23:17:32,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:32,892 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 23:17:32,992 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 23:17:32,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:33,180 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 40 treesize of output 36 [2025-04-13 23:17:33,187 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:17:33,187 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2025-04-13 23:17:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583529649] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:33,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:33,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-04-13 23:17:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741724979] [2025-04-13 23:17:33,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:33,248 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:17:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:33,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:17:33,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:17:33,249 INFO L87 Difference]: Start difference. First operand 138 states and 323 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 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 23:17:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:34,184 INFO L93 Difference]: Finished difference Result 902 states and 2119 transitions. [2025-04-13 23:17:34,184 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 23:17:34,184 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 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 23 [2025-04-13 23:17:34,184 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:34,187 INFO L225 Difference]: With dead ends: 902 [2025-04-13 23:17:34,187 INFO L226 Difference]: Without dead ends: 594 [2025-04-13 23:17:34,189 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1567, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:17:34,190 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 392 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:34,190 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 53 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:17:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2025-04-13 23:17:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 206. [2025-04-13 23:17:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.268292682926829) internal successors, (465), 205 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 465 transitions. [2025-04-13 23:17:34,229 INFO L79 Accepts]: Start accepts. Automaton has 206 states and 465 transitions. Word has length 23 [2025-04-13 23:17:34,230 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:34,230 INFO L485 AbstractCegarLoop]: Abstraction has 206 states and 465 transitions. [2025-04-13 23:17:34,230 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 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 23:17:34,230 INFO L278 IsEmpty]: Start isEmpty. Operand 206 states and 465 transitions. [2025-04-13 23:17:34,233 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:17:34,233 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:34,234 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:34,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 23:17:34,438 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:34,438 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 23:17:34,438 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 134165630, now seen corresponding path program 5 times [2025-04-13 23:17:34,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:34,439 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539856813] [2025-04-13 23:17:34,439 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:17:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:34,447 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-04-13 23:17:34,461 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:17:34,461 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 23:17:34,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 23:17:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:34,573 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539856813] [2025-04-13 23:17:34,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539856813] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:34,573 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43605794] [2025-04-13 23:17:34,574 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:17:34,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:34,575 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 23:17:34,577 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 23:17:34,623 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-04-13 23:17:34,644 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:17:34,645 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 23:17:34,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:34,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 23:17:34,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:17:34,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:17:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43605794] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:34,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2025-04-13 23:17:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033191093] [2025-04-13 23:17:34,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:34,963 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 23:17:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:34,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 23:17:34,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2025-04-13 23:17:34,963 INFO L87 Difference]: Start difference. First operand 206 states and 465 transitions. Second operand has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:35,193 INFO L93 Difference]: Finished difference Result 406 states and 928 transitions. [2025-04-13 23:17:35,193 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:17:35,193 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 23:17:35,194 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:35,195 INFO L225 Difference]: With dead ends: 406 [2025-04-13 23:17:35,195 INFO L226 Difference]: Without dead ends: 206 [2025-04-13 23:17:35,195 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2025-04-13 23:17:35,196 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:35,196 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 37 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:17:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-04-13 23:17:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2025-04-13 23:17:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.2634146341463413) internal successors, (464), 205 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 464 transitions. [2025-04-13 23:17:35,211 INFO L79 Accepts]: Start accepts. Automaton has 206 states and 464 transitions. Word has length 27 [2025-04-13 23:17:35,211 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:35,211 INFO L485 AbstractCegarLoop]: Abstraction has 206 states and 464 transitions. [2025-04-13 23:17:35,212 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:35,212 INFO L278 IsEmpty]: Start isEmpty. Operand 206 states and 464 transitions. [2025-04-13 23:17:35,212 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:17:35,212 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:35,212 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:35,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 23:17:35,417 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:35,417 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 23:17:35,417 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 150998895, now seen corresponding path program 6 times [2025-04-13 23:17:35,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:35,418 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760599651] [2025-04-13 23:17:35,418 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:17:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:35,425 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-04-13 23:17:35,451 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:17:35,451 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:17:35,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:17:35,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:35,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760599651] [2025-04-13 23:17:35,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760599651] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:35,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570293098] [2025-04-13 23:17:35,661 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:17:35,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:35,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:35,663 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 23:17:35,664 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 23:17:35,704 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-04-13 23:17:35,751 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:17:35,752 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:17:35,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:35,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 23:17:35,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:17:35,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:36,188 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:17:36,189 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 23:17:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:17:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570293098] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:36,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 23:17:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155104043] [2025-04-13 23:17:36,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:36,251 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 23:17:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:36,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 23:17:36,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:17:36,251 INFO L87 Difference]: Start difference. First operand 206 states and 464 transitions. Second operand has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 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 23:17:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:36,636 INFO L93 Difference]: Finished difference Result 606 states and 1415 transitions. [2025-04-13 23:17:36,636 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 23:17:36,636 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 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 28 [2025-04-13 23:17:36,636 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:36,638 INFO L225 Difference]: With dead ends: 606 [2025-04-13 23:17:36,638 INFO L226 Difference]: Without dead ends: 274 [2025-04-13 23:17:36,639 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:17:36,639 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 87 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:36,639 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 34 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:17:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2025-04-13 23:17:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 206. [2025-04-13 23:17:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.2585365853658534) internal successors, (463), 205 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 463 transitions. [2025-04-13 23:17:36,655 INFO L79 Accepts]: Start accepts. Automaton has 206 states and 463 transitions. Word has length 28 [2025-04-13 23:17:36,655 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:36,655 INFO L485 AbstractCegarLoop]: Abstraction has 206 states and 463 transitions. [2025-04-13 23:17:36,655 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 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 23:17:36,655 INFO L278 IsEmpty]: Start isEmpty. Operand 206 states and 463 transitions. [2025-04-13 23:17:36,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 23:17:36,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:36,656 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:36,662 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 23:17:36,860 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:36,860 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 23:17:36,860 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2043837028, now seen corresponding path program 7 times [2025-04-13 23:17:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:36,860 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531560145] [2025-04-13 23:17:36,860 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:17:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:36,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 23:17:36,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:17:36,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:36,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:37,834 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531560145] [2025-04-13 23:17:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531560145] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:37,834 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279948080] [2025-04-13 23:17:37,834 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:17:37,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:37,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:37,836 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 23:17:37,838 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 23:17:37,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 23:17:37,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:17:37,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:37,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:37,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 23:17:37,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:17:38,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:38,093 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:17:38,094 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 23:17:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-04-13 23:17:38,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279948080] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:38,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:38,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 5] total 22 [2025-04-13 23:17:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717190484] [2025-04-13 23:17:38,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:38,107 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 23:17:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:38,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 23:17:38,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-04-13 23:17:38,108 INFO L87 Difference]: Start difference. First operand 206 states and 463 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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 23:17:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:38,600 INFO L93 Difference]: Finished difference Result 583 states and 1360 transitions. [2025-04-13 23:17:38,600 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 23:17:38,600 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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 29 [2025-04-13 23:17:38,600 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:38,603 INFO L225 Difference]: With dead ends: 583 [2025-04-13 23:17:38,603 INFO L226 Difference]: Without dead ends: 574 [2025-04-13 23:17:38,603 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 23:17:38,605 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 143 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:38,605 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 52 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:17:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-04-13 23:17:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 150. [2025-04-13 23:17:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.295302013422819) internal successors, (342), 149 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 342 transitions. [2025-04-13 23:17:38,627 INFO L79 Accepts]: Start accepts. Automaton has 150 states and 342 transitions. Word has length 29 [2025-04-13 23:17:38,627 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:38,627 INFO L485 AbstractCegarLoop]: Abstraction has 150 states and 342 transitions. [2025-04-13 23:17:38,627 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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 23:17:38,627 INFO L278 IsEmpty]: Start isEmpty. Operand 150 states and 342 transitions. [2025-04-13 23:17:38,627 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 23:17:38,628 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:38,628 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:38,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 23:17:38,833 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:38,833 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 23:17:38,833 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash 672830110, now seen corresponding path program 8 times [2025-04-13 23:17:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:38,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745581865] [2025-04-13 23:17:38,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:17:38,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:38,841 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:17:38,852 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:17:38,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:17:38,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:39,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:39,368 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745581865] [2025-04-13 23:17:39,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745581865] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:39,368 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78621749] [2025-04-13 23:17:39,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:17:39,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:39,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:39,370 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 23:17:39,371 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 23:17:39,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:17:39,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:17:39,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:17:39,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:39,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 23:17:39,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:17:39,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:39,631 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:17:39,631 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 23:17:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:17:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78621749] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:39,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 21 [2025-04-13 23:17:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109624791] [2025-04-13 23:17:39,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:39,645 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 23:17:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:39,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 23:17:39,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:17:39,646 INFO L87 Difference]: Start difference. First operand 150 states and 342 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:40,405 INFO L93 Difference]: Finished difference Result 395 states and 921 transitions. [2025-04-13 23:17:40,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 23:17:40,405 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-04-13 23:17:40,405 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:40,407 INFO L225 Difference]: With dead ends: 395 [2025-04-13 23:17:40,407 INFO L226 Difference]: Without dead ends: 370 [2025-04-13 23:17:40,407 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=1572, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:17:40,408 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 268 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:40,408 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 84 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:17:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-04-13 23:17:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 148. [2025-04-13 23:17:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.2857142857142856) internal successors, (336), 147 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 336 transitions. [2025-04-13 23:17:40,424 INFO L79 Accepts]: Start accepts. Automaton has 148 states and 336 transitions. Word has length 29 [2025-04-13 23:17:40,424 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:40,425 INFO L485 AbstractCegarLoop]: Abstraction has 148 states and 336 transitions. [2025-04-13 23:17:40,425 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:40,425 INFO L278 IsEmpty]: Start isEmpty. Operand 148 states and 336 transitions. [2025-04-13 23:17:40,425 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:17:40,425 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:40,425 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:40,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 23:17:40,625 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 23:17:40,626 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 23:17:40,626 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1984643776, now seen corresponding path program 9 times [2025-04-13 23:17:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:40,626 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353900359] [2025-04-13 23:17:40,626 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:17:40,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:40,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 5 equivalence classes. [2025-04-13 23:17:40,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 31 statements. [2025-04-13 23:17:40,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 23:17:40,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:17:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:41,062 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353900359] [2025-04-13 23:17:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353900359] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:41,062 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469398926] [2025-04-13 23:17:41,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:17:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:41,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:41,064 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 23:17:41,065 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 23:17:41,109 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 5 equivalence classes. [2025-04-13 23:17:41,177 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 31 statements. [2025-04-13 23:17:41,177 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 23:17:41,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:41,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 23:17:41,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:41,260 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 23:17:41,600 INFO L325 Elim1Store]: treesize reduction 28, result has 9.7 percent of original size [2025-04-13 23:17:41,601 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 43 treesize of output 16 [2025-04-13 23:17:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:17:41,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:42,163 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 79 treesize of output 71 [2025-04-13 23:17:42,178 INFO L325 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2025-04-13 23:17:42,178 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109 treesize of output 95 [2025-04-13 23:17:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:17:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469398926] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:42,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2025-04-13 23:17:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736450425] [2025-04-13 23:17:42,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:42,329 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 23:17:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:42,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 23:17:42,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=932, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:17:42,330 INFO L87 Difference]: Start difference. First operand 148 states and 336 transitions. Second operand has 35 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:43,509 INFO L93 Difference]: Finished difference Result 1041 states and 2460 transitions. [2025-04-13 23:17:43,509 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 23:17:43,509 INFO L79 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-13 23:17:43,509 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:43,511 INFO L225 Difference]: With dead ends: 1041 [2025-04-13 23:17:43,511 INFO L226 Difference]: Without dead ends: 188 [2025-04-13 23:17:43,516 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=785, Invalid=2875, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 23:17:43,517 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 398 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:43,517 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 65 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:17:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-04-13 23:17:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2025-04-13 23:17:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.277027027027027) internal successors, (337), 148 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 337 transitions. [2025-04-13 23:17:43,545 INFO L79 Accepts]: Start accepts. Automaton has 149 states and 337 transitions. Word has length 31 [2025-04-13 23:17:43,545 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:43,545 INFO L485 AbstractCegarLoop]: Abstraction has 149 states and 337 transitions. [2025-04-13 23:17:43,546 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:43,546 INFO L278 IsEmpty]: Start isEmpty. Operand 149 states and 337 transitions. [2025-04-13 23:17:43,546 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 23:17:43,546 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:43,546 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:43,552 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 23:17:43,749 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:43,749 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 23:17:43,750 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:43,750 INFO L85 PathProgramCache]: Analyzing trace with hash 402438065, now seen corresponding path program 10 times [2025-04-13 23:17:43,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:43,750 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602904074] [2025-04-13 23:17:43,750 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:17:43,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:43,758 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-13 23:17:43,762 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 23:17:43,762 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:17:43,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:43,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:43,812 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602904074] [2025-04-13 23:17:43,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602904074] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:43,812 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519270555] [2025-04-13 23:17:43,812 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:17:43,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:43,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:43,814 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 23:17:43,816 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 23:17:43,865 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-13 23:17:43,884 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 23:17:43,884 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:17:43,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:43,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 23:17:43,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:43,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519270555] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:44,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 12 [2025-04-13 23:17:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734695857] [2025-04-13 23:17:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:44,021 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 23:17:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:44,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 23:17:44,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:17:44,022 INFO L87 Difference]: Start difference. First operand 149 states and 337 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:44,136 INFO L93 Difference]: Finished difference Result 389 states and 903 transitions. [2025-04-13 23:17:44,136 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:17:44,136 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 23:17:44,136 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:44,139 INFO L225 Difference]: With dead ends: 389 [2025-04-13 23:17:44,139 INFO L226 Difference]: Without dead ends: 337 [2025-04-13 23:17:44,139 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 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 23:17:44,139 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 66 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:44,139 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 10 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:17:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-04-13 23:17:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 301. [2025-04-13 23:17:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 2.4266666666666667) internal successors, (728), 300 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 728 transitions. [2025-04-13 23:17:44,166 INFO L79 Accepts]: Start accepts. Automaton has 301 states and 728 transitions. Word has length 32 [2025-04-13 23:17:44,166 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:44,166 INFO L485 AbstractCegarLoop]: Abstraction has 301 states and 728 transitions. [2025-04-13 23:17:44,166 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,166 INFO L278 IsEmpty]: Start isEmpty. Operand 301 states and 728 transitions. [2025-04-13 23:17:44,167 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-04-13 23:17:44,167 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:44,167 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:44,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 23:17:44,368 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-13 23:17:44,368 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 23:17:44,368 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash -765233073, now seen corresponding path program 11 times [2025-04-13 23:17:44,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:44,368 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700321693] [2025-04-13 23:17:44,368 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:17:44,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:44,375 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 5 equivalence classes. [2025-04-13 23:17:44,389 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 23:17:44,389 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 23:17:44,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:44,518 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700321693] [2025-04-13 23:17:44,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700321693] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:44,518 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556980045] [2025-04-13 23:17:44,519 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:17:44,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:44,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:44,520 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 23:17:44,522 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 23:17:44,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 5 equivalence classes. [2025-04-13 23:17:44,601 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 23:17:44,601 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 23:17:44,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:44,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 23:17:44,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:17:44,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:44,677 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:17:44,677 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 23:17:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556980045] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:44,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 11 [2025-04-13 23:17:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920349507] [2025-04-13 23:17:44,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:44,693 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 23:17:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:44,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 23:17:44,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:17:44,694 INFO L87 Difference]: Start difference. First operand 301 states and 728 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:44,965 INFO L93 Difference]: Finished difference Result 507 states and 1194 transitions. [2025-04-13 23:17:44,965 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 23:17:44,965 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-04-13 23:17:44,966 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:44,968 INFO L225 Difference]: With dead ends: 507 [2025-04-13 23:17:44,968 INFO L226 Difference]: Without dead ends: 386 [2025-04-13 23:17:44,968 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:17:44,969 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 199 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:44,969 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 43 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:17:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2025-04-13 23:17:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 179. [2025-04-13 23:17:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.297752808988764) internal successors, (409), 178 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 409 transitions. [2025-04-13 23:17:44,990 INFO L79 Accepts]: Start accepts. Automaton has 179 states and 409 transitions. Word has length 34 [2025-04-13 23:17:44,990 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:44,990 INFO L485 AbstractCegarLoop]: Abstraction has 179 states and 409 transitions. [2025-04-13 23:17:44,990 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:44,990 INFO L278 IsEmpty]: Start isEmpty. Operand 179 states and 409 transitions. [2025-04-13 23:17:44,991 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 23:17:44,991 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:44,991 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:44,997 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 23:17:45,191 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 23:17:45,192 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 23:17:45,192 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash -983893327, now seen corresponding path program 12 times [2025-04-13 23:17:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:45,192 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6087334] [2025-04-13 23:17:45,192 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:17:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:45,198 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 6 equivalence classes. [2025-04-13 23:17:45,213 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:17:45,213 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 23:17:45,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:45,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6087334] [2025-04-13 23:17:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6087334] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:45,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144069904] [2025-04-13 23:17:45,290 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:17:45,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:45,292 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 23:17:45,294 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 23:17:45,349 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 6 equivalence classes. [2025-04-13 23:17:45,494 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:17:45,494 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 23:17:45,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:45,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 23:17:45,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:45,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:17:45,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144069904] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:45,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:45,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 10] total 16 [2025-04-13 23:17:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522966344] [2025-04-13 23:17:45,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:45,668 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:17:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:45,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:17:45,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:17:45,669 INFO L87 Difference]: Start difference. First operand 179 states and 409 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:17:45,807 INFO L93 Difference]: Finished difference Result 505 states and 1181 transitions. [2025-04-13 23:17:45,807 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 23:17:45,807 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-13 23:17:45,807 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:17:45,810 INFO L225 Difference]: With dead ends: 505 [2025-04-13 23:17:45,810 INFO L226 Difference]: Without dead ends: 447 [2025-04-13 23:17:45,810 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:17:45,811 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 100 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:17:45,811 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 12 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:17:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2025-04-13 23:17:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 402. [2025-04-13 23:17:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.4438902743142146) internal successors, (980), 401 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 980 transitions. [2025-04-13 23:17:45,848 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 980 transitions. Word has length 36 [2025-04-13 23:17:45,848 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:17:45,848 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 980 transitions. [2025-04-13 23:17:45,848 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:17:45,848 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 980 transitions. [2025-04-13 23:17:45,850 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:17:45,850 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:17:45,850 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:17:45,856 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 23:17:46,054 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 23:17:46,054 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 23:17:46,055 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:17:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1997814863, now seen corresponding path program 13 times [2025-04-13 23:17:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:17:46,055 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805200559] [2025-04-13 23:17:46,055 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:17:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:17:46,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 23:17:46,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:17:46,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:46,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:17:46,514 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805200559] [2025-04-13 23:17:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805200559] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:17:46,514 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793489753] [2025-04-13 23:17:46,514 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:17:46,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:17:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:17:46,516 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 23:17:46,518 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 23:17:46,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 23:17:46,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:17:46,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:17:46,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:17:46,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 23:17:46,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:17:47,128 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:17:47,129 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 23:17:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:47,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:17:47,310 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:17:47,311 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 23:17:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:17:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793489753] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:17:47,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:17:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 49 [2025-04-13 23:17:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705807313] [2025-04-13 23:17:47,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:17:47,867 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-13 23:17:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:17:47,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-13 23:17:47,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 23:17:47,869 INFO L87 Difference]: Start difference. First operand 402 states and 980 transitions. Second operand has 51 states, 50 states have (on average 2.12) internal successors, (106), 50 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:18:23,198 INFO L93 Difference]: Finished difference Result 10221 states and 24155 transitions. [2025-04-13 23:18:23,198 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2025-04-13 23:18:23,199 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.12) internal successors, (106), 50 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 23:18:23,199 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:18:23,230 INFO L225 Difference]: With dead ends: 10221 [2025-04-13 23:18:23,230 INFO L226 Difference]: Without dead ends: 8863 [2025-04-13 23:18:23,247 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67832 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=22937, Invalid=168469, Unknown=0, NotChecked=0, Total=191406 [2025-04-13 23:18:23,248 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 866 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 51033 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 51156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 51033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:18:23,248 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 126 Invalid, 51156 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [123 Valid, 51033 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2025-04-13 23:18:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8863 states. [2025-04-13 23:18:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8863 to 3346. [2025-04-13 23:18:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3345 states have (on average 3.000597907324365) internal successors, (10037), 3345 states have internal predecessors, (10037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 10037 transitions. [2025-04-13 23:18:23,604 INFO L79 Accepts]: Start accepts. Automaton has 3346 states and 10037 transitions. Word has length 38 [2025-04-13 23:18:23,604 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:18:23,604 INFO L485 AbstractCegarLoop]: Abstraction has 3346 states and 10037 transitions. [2025-04-13 23:18:23,604 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.12) internal successors, (106), 50 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:23,604 INFO L278 IsEmpty]: Start isEmpty. Operand 3346 states and 10037 transitions. [2025-04-13 23:18:23,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:18:23,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:18:23,606 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:18:23,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 23:18:23,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 23:18:23,807 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 23:18:23,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:18:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1603781455, now seen corresponding path program 14 times [2025-04-13 23:18:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:18:23,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230538823] [2025-04-13 23:18:23,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:18:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:18:23,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-13 23:18:23,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:18:23,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:18:23,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:18:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:18:24,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:18:24,046 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230538823] [2025-04-13 23:18:24,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230538823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:18:24,046 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276579738] [2025-04-13 23:18:24,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:18:24,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:18:24,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:18:24,048 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 23:18:24,050 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 23:18:24,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-13 23:18:24,120 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:18:24,120 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:18:24,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:18:24,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 23:18:24,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:18:24,193 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 23:18:24,451 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:18:24,452 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 23:18:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:18:24,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:18:24,934 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 23:18:24,939 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:18:24,939 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 23:18:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:18:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276579738] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:18:25,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:18:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 45 [2025-04-13 23:18:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737476295] [2025-04-13 23:18:25,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:18:25,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:18:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:18:25,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:18:25,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1888, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:18:25,141 INFO L87 Difference]: Start difference. First operand 3346 states and 10037 transitions. Second operand has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:18:37,582 INFO L93 Difference]: Finished difference Result 27920 states and 78485 transitions. [2025-04-13 23:18:37,582 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2025-04-13 23:18:37,582 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 23:18:37,582 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:18:37,658 INFO L225 Difference]: With dead ends: 27920 [2025-04-13 23:18:37,658 INFO L226 Difference]: Without dead ends: 21600 [2025-04-13 23:18:37,674 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12770 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6862, Invalid=33740, Unknown=0, NotChecked=0, Total=40602 [2025-04-13 23:18:37,675 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 1077 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6018 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 6065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:18:37,675 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 101 Invalid, 6065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 6018 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-04-13 23:18:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21600 states. [2025-04-13 23:18:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21600 to 4260. [2025-04-13 23:18:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 3.0772481803240197) internal successors, (13106), 4259 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 13106 transitions. [2025-04-13 23:18:38,535 INFO L79 Accepts]: Start accepts. Automaton has 4260 states and 13106 transitions. Word has length 38 [2025-04-13 23:18:38,535 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:18:38,535 INFO L485 AbstractCegarLoop]: Abstraction has 4260 states and 13106 transitions. [2025-04-13 23:18:38,536 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:38,536 INFO L278 IsEmpty]: Start isEmpty. Operand 4260 states and 13106 transitions. [2025-04-13 23:18:38,538 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:18:38,538 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:18:38,538 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:18:38,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 23:18:38,743 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:18:38,743 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 23:18:38,743 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:18:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash -737694065, now seen corresponding path program 15 times [2025-04-13 23:18:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:18:38,743 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400387594] [2025-04-13 23:18:38,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:18:38,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:18:38,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-04-13 23:18:38,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 36 of 38 statements. [2025-04-13 23:18:38,774 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 23:18:38,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:18:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:18:39,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:18:39,031 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400387594] [2025-04-13 23:18:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400387594] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:18:39,032 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466565518] [2025-04-13 23:18:39,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:18:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:18:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:18:39,033 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 23:18:39,035 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 23:18:39,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-04-13 23:18:39,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 36 of 38 statements. [2025-04-13 23:18:39,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 23:18:39,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:18:39,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 23:18:39,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:18:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:18:39,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:18:39,554 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:18:39,554 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 23:18:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:18:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466565518] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:18:39,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:18:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2025-04-13 23:18:39,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350413811] [2025-04-13 23:18:39,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:18:39,708 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 23:18:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:18:39,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 23:18:39,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1059, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:18:39,709 INFO L87 Difference]: Start difference. First operand 4260 states and 13106 transitions. Second operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:18:42,264 INFO L93 Difference]: Finished difference Result 6390 states and 18900 transitions. [2025-04-13 23:18:42,265 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 23:18:42,265 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 23:18:42,265 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:18:42,271 INFO L225 Difference]: With dead ends: 6390 [2025-04-13 23:18:42,271 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 23:18:42,277 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=636, Invalid=2444, Unknown=0, NotChecked=0, Total=3080 [2025-04-13 23:18:42,278 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 215 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:18:42,278 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 29 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:18:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 23:18:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 23:18:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 23:18:42,283 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2025-04-13 23:18:42,283 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:18:42,283 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 23:18:42,284 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:18:42,284 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 23:18:42,284 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 23:18:42,286 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 23:18:42,286 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 23:18:42,286 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 23:18:42,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 23:18:42,487 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 23:18:42,489 INFO L422 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1] [2025-04-13 23:18:42,491 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:18:42,491 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:18:42,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:18:42 BasicIcfg [2025-04-13 23:18:42,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:18:42,493 INFO L158 Benchmark]: Toolchain (without parser) took 74579.62ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 110.4MB in the beginning and 713.6MB in the end (delta: -603.2MB). Peak memory consumption was 889.5MB. Max. memory is 8.0GB. [2025-04-13 23:18:42,493 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:18:42,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.91ms. Allocated memory is still 155.2MB. Free memory was 110.4MB in the beginning and 95.8MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 23:18:42,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.71ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 94.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 23:18:42,494 INFO L158 Benchmark]: Boogie Preprocessor took 32.91ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 92.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:18:42,494 INFO L158 Benchmark]: IcfgBuilder took 445.61ms. Allocated memory is still 155.2MB. Free memory was 92.4MB in the beginning and 49.7MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 23:18:42,494 INFO L158 Benchmark]: TraceAbstraction took 73877.67ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 49.1MB in the beginning and 713.6MB in the end (delta: -664.5MB). Peak memory consumption was 830.8MB. Max. memory is 8.0GB. [2025-04-13 23:18:42,495 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 86.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.91ms. Allocated memory is still 155.2MB. Free memory was 110.4MB in the beginning and 95.8MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.71ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 94.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.91ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 92.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 445.61ms. Allocated memory is still 155.2MB. Free memory was 92.4MB in the beginning and 49.7MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 73877.67ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 49.1MB in the beginning and 713.6MB in the end (delta: -664.5MB). Peak memory consumption was 830.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 86]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 29 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 73.8s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 55.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4036 SdHoareTripleChecker+Valid, 23.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4036 mSDsluCounter, 701 SdHoareTripleChecker+Invalid, 20.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 636 mSDsCounter, 313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62373 IncrementalHoareTripleChecker+Invalid, 62686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 313 mSolverCounterUnsat, 65 mSDtfsCounter, 62373 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1680 GetRequests, 662 SyntacticMatches, 2 SemanticMatches, 1016 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84040 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4260occurred in iteration=17, InterpolantAutomatonStates: 754, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 24380 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 927 NumberOfCodeBlocks, 919 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 1320 ConstructedInterpolants, 94 QuantifiedInterpolants, 16323 SizeOfPredicates, 113 NumberOfNonLiveVariables, 2940 ConjunctsInSsa, 323 ConjunctsInUnsatCore, 48 InterpolantComputations, 3 PerfectInterpolantSequences, 569/1434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 23:18:42,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...