/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:40:08,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:40:08,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:40:08,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:40:08,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:40:08,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:40:08,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:40:08,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:40:08,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:40:08,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:40:08,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:40:08,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:40:08,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:40:08,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:40:08,113 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:40:08,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:40:08,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:40:08,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:40:08,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:40:08,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:40:08,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:40:08,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:40:08,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:40:08,121 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:40:08,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:40:08,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:40:08,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:40:08,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:40:08,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:40:08,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:40:08,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:40:08,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:40:08,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:40:08,124 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:40:08,124 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:40:08,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:40:08,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:40:08,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:40:08,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:40:08,125 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:08,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:40:08,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:40:08,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:40:08,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:40:08,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:40:08,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-02 22:40:09,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:40:09,713 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:40:09,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-02 22:40:09,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be58626c8/40fff7d40df148629c2d79d2f53416b8/FLAGcc4ccb3bf [2024-11-02 22:40:09,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be58626c8/40fff7d40df148629c2d79d2f53416b8 [2024-11-02 22:40:09,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:40:09,744 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:40:09,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:40:09,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:40:09,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:40:09,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:40:09" (1/1) ... [2024-11-02 22:40:09,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d582fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:09, skipping insertion in model container [2024-11-02 22:40:09,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:40:09" (1/1) ... [2024-11-02 22:40:09,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:40:09,961 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c[37883,37896] [2024-11-02 22:40:09,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:40:09,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:40:10,023 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c[37883,37896] [2024-11-02 22:40:10,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:40:10,041 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:40:10,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10 WrapperNode [2024-11-02 22:40:10,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:40:10,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:40:10,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:40:10,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:40:10,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,079 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 474 [2024-11-02 22:40:10,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:40:10,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:40:10,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:40:10,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:40:10,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,112 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 22:40:10,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:40:10,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:40:10,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:40:10,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:40:10,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (1/1) ... [2024-11-02 22:40:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:40:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:10,185 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) [2024-11-02 22:40:10,191 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 [2024-11-02 22:40:10,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:40:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:40:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:40:10,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:40:10,285 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:40:10,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:40:10,296 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 22:40:10,620 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2024-11-02 22:40:10,620 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2024-11-02 22:40:10,649 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-02 22:40:10,649 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:40:10,663 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:40:10,664 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:40:10,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:40:10 BoogieIcfgContainer [2024-11-02 22:40:10,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:40:10,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:40:10,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:40:10,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:40:10,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:40:09" (1/3) ... [2024-11-02 22:40:10,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a0347b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:40:10, skipping insertion in model container [2024-11-02 22:40:10,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:10" (2/3) ... [2024-11-02 22:40:10,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a0347b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:40:10, skipping insertion in model container [2024-11-02 22:40:10,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:40:10" (3/3) ... [2024-11-02 22:40:10,672 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2024-11-02 22:40:10,706 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:40:10,707 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:40:10,789 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:40:10,795 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@2224695d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:40:10,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:40:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 22:40:10,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:10,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:10,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:10,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2024-11-02 22:40:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827004901] [2024-11-02 22:40:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:10,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:10,823 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) [2024-11-02 22:40:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:40:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:10,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:10,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:40:10,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:40:10,940 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827004901] [2024-11-02 22:40:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [827004901] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:10,941 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:10,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573542535] [2024-11-02 22:40:10,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:10,966 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 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, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:11,121 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2024-11-02 22:40:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 22:40:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:11,133 INFO L225 Difference]: With dead ends: 247 [2024-11-02 22:40:11,133 INFO L226 Difference]: Without dead ends: 113 [2024-11-02 22:40:11,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:11,138 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:11,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-02 22:40:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-02 22:40:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2024-11-02 22:40:11,169 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2024-11-02 22:40:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:11,169 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2024-11-02 22:40:11,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2024-11-02 22:40:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-02 22:40:11,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:11,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:11,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 22:40:11,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:11,376 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:11,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2024-11-02 22:40:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273635923] [2024-11-02 22:40:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:11,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:11,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:11,380 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) [2024-11-02 22:40:11,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:40:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:11,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:11,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:40:11,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:40:11,489 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273635923] [2024-11-02 22:40:11,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [273635923] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:11,489 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:11,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:11,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955760081] [2024-11-02 22:40:11,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:11,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:11,491 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:11,591 INFO L93 Difference]: Finished difference Result 230 states and 352 transitions. [2024-11-02 22:40:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-02 22:40:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:11,593 INFO L225 Difference]: With dead ends: 230 [2024-11-02 22:40:11,593 INFO L226 Difference]: Without dead ends: 128 [2024-11-02 22:40:11,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:11,594 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:11,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 242 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-02 22:40:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-02 22:40:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2024-11-02 22:40:11,602 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2024-11-02 22:40:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:11,602 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2024-11-02 22:40:11,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2024-11-02 22:40:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-02 22:40:11,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:11,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:11,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:11,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:11,805 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:11,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2024-11-02 22:40:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141077103] [2024-11-02 22:40:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:11,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:11,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:11,808 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) [2024-11-02 22:40:11,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 22:40:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:11,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:11,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:11,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:11,946 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141077103] [2024-11-02 22:40:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141077103] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:11,947 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:11,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660130657] [2024-11-02 22:40:11,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:11,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:11,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:11,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:11,948 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:11,964 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2024-11-02 22:40:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-02 22:40:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:11,966 INFO L225 Difference]: With dead ends: 271 [2024-11-02 22:40:11,966 INFO L226 Difference]: Without dead ends: 154 [2024-11-02 22:40:11,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:11,967 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 21 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:11,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 311 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-02 22:40:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-02 22:40:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-02 22:40:11,978 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2024-11-02 22:40:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:11,978 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-02 22:40:11,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-02 22:40:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-02 22:40:11,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:11,979 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:11,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 22:40:12,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:12,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:12,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2024-11-02 22:40:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547208062] [2024-11-02 22:40:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:12,183 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) [2024-11-02 22:40:12,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 22:40:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:12,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:12,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:12,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:12,293 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547208062] [2024-11-02 22:40:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1547208062] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:12,294 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:12,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815962065] [2024-11-02 22:40:12,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:12,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:12,295 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:12,402 INFO L93 Difference]: Finished difference Result 288 states and 429 transitions. [2024-11-02 22:40:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-02 22:40:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:12,404 INFO L225 Difference]: With dead ends: 288 [2024-11-02 22:40:12,404 INFO L226 Difference]: Without dead ends: 171 [2024-11-02 22:40:12,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:12,405 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:12,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 255 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-02 22:40:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-02 22:40:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2024-11-02 22:40:12,412 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2024-11-02 22:40:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:12,412 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2024-11-02 22:40:12,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2024-11-02 22:40:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-02 22:40:12,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:12,414 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:12,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:12,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:12,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:12,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2024-11-02 22:40:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:12,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348763311] [2024-11-02 22:40:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:12,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:12,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:12,621 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) [2024-11-02 22:40:12,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 22:40:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:12,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:12,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 22:40:12,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 22:40:12,776 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:12,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348763311] [2024-11-02 22:40:12,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348763311] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:12,777 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:12,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931855461] [2024-11-02 22:40:12,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:12,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:12,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:12,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:12,778 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:12,820 INFO L93 Difference]: Finished difference Result 567 states and 833 transitions. [2024-11-02 22:40:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:12,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 68 [2024-11-02 22:40:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:12,824 INFO L225 Difference]: With dead ends: 567 [2024-11-02 22:40:12,824 INFO L226 Difference]: Without dead ends: 433 [2024-11-02 22:40:12,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:12,825 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 353 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:12,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 495 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:12,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-02 22:40:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2024-11-02 22:40:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4560185185185186) internal successors, (629), 432 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 629 transitions. [2024-11-02 22:40:12,840 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 629 transitions. Word has length 68 [2024-11-02 22:40:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:12,841 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 629 transitions. [2024-11-02 22:40:12,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 629 transitions. [2024-11-02 22:40:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-02 22:40:12,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:12,843 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:12,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 22:40:13,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:13,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 562572643, now seen corresponding path program 1 times [2024-11-02 22:40:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065669853] [2024-11-02 22:40:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:13,047 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) [2024-11-02 22:40:13,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 22:40:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:13,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:13,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:13,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 22:40:13,155 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065669853] [2024-11-02 22:40:13,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1065669853] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:13,155 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:13,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571425831] [2024-11-02 22:40:13,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:13,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:13,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:13,157 INFO L87 Difference]: Start difference. First operand 433 states and 629 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2024-11-02 22:40:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:13,178 INFO L93 Difference]: Finished difference Result 850 states and 1237 transitions. [2024-11-02 22:40:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:13,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 69 [2024-11-02 22:40:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:13,180 INFO L225 Difference]: With dead ends: 850 [2024-11-02 22:40:13,180 INFO L226 Difference]: Without dead ends: 454 [2024-11-02 22:40:13,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:13,181 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 11 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:13,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-02 22:40:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2024-11-02 22:40:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.4481236203090508) internal successors, (656), 453 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 656 transitions. [2024-11-02 22:40:13,194 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 656 transitions. Word has length 69 [2024-11-02 22:40:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:13,194 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 656 transitions. [2024-11-02 22:40:13,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2024-11-02 22:40:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 656 transitions. [2024-11-02 22:40:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-02 22:40:13,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:13,197 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:13,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 22:40:13,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:13,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1304795004, now seen corresponding path program 1 times [2024-11-02 22:40:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:13,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494010300] [2024-11-02 22:40:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:13,400 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) [2024-11-02 22:40:13,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 22:40:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:13,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:13,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-02 22:40:13,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-02 22:40:13,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494010300] [2024-11-02 22:40:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [494010300] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:13,523 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:13,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:13,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155346712] [2024-11-02 22:40:13,523 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:13,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:13,524 INFO L87 Difference]: Start difference. First operand 454 states and 656 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:13,677 INFO L93 Difference]: Finished difference Result 985 states and 1467 transitions. [2024-11-02 22:40:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 104 [2024-11-02 22:40:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:13,680 INFO L225 Difference]: With dead ends: 985 [2024-11-02 22:40:13,680 INFO L226 Difference]: Without dead ends: 568 [2024-11-02 22:40:13,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:13,681 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 68 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:13,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 261 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-02 22:40:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-02 22:40:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 1.4479717813051147) internal successors, (821), 567 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 821 transitions. [2024-11-02 22:40:13,693 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 821 transitions. Word has length 104 [2024-11-02 22:40:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:13,694 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 821 transitions. [2024-11-02 22:40:13,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 821 transitions. [2024-11-02 22:40:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 22:40:13,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:13,696 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:13,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:13,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:13,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1896690995, now seen corresponding path program 1 times [2024-11-02 22:40:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:13,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701234895] [2024-11-02 22:40:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:13,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:13,902 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) [2024-11-02 22:40:13,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 22:40:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:13,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:13,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-02 22:40:14,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-02 22:40:14,054 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701234895] [2024-11-02 22:40:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [701234895] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:14,055 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434182585] [2024-11-02 22:40:14,055 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:14,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:14,056 INFO L87 Difference]: Start difference. First operand 568 states and 821 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:14,250 INFO L93 Difference]: Finished difference Result 1171 states and 1722 transitions. [2024-11-02 22:40:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:14,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 125 [2024-11-02 22:40:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:14,253 INFO L225 Difference]: With dead ends: 1171 [2024-11-02 22:40:14,253 INFO L226 Difference]: Without dead ends: 640 [2024-11-02 22:40:14,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:14,254 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 69 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:14,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 212 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 22:40:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-02 22:40:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-02 22:40:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.4209702660406887) internal successors, (908), 639 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 908 transitions. [2024-11-02 22:40:14,264 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 908 transitions. Word has length 125 [2024-11-02 22:40:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:14,264 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 908 transitions. [2024-11-02 22:40:14,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 908 transitions. [2024-11-02 22:40:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-02 22:40:14,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:14,266 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:14,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:14,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:14,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:14,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 268550543, now seen corresponding path program 1 times [2024-11-02 22:40:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351081066] [2024-11-02 22:40:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:14,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:14,468 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) [2024-11-02 22:40:14,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 22:40:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:14,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:14,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-02 22:40:14,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-02 22:40:14,571 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351081066] [2024-11-02 22:40:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [351081066] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:14,571 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:14,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559100451] [2024-11-02 22:40:14,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:14,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:14,572 INFO L87 Difference]: Start difference. First operand 640 states and 908 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:14,722 INFO L93 Difference]: Finished difference Result 1293 states and 1855 transitions. [2024-11-02 22:40:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 159 [2024-11-02 22:40:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:14,724 INFO L225 Difference]: With dead ends: 1293 [2024-11-02 22:40:14,724 INFO L226 Difference]: Without dead ends: 690 [2024-11-02 22:40:14,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:14,726 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 79 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:14,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 282 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-02 22:40:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2024-11-02 22:40:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.4005805515239478) internal successors, (965), 689 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 965 transitions. [2024-11-02 22:40:14,737 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 965 transitions. Word has length 159 [2024-11-02 22:40:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:14,737 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 965 transitions. [2024-11-02 22:40:14,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 965 transitions. [2024-11-02 22:40:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-02 22:40:14,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:14,739 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:14,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 22:40:14,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:14,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:14,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 260977371, now seen corresponding path program 1 times [2024-11-02 22:40:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608464694] [2024-11-02 22:40:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:14,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:14,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:14,942 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) [2024-11-02 22:40:14,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 22:40:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:15,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:15,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-02 22:40:15,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-02 22:40:15,050 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608464694] [2024-11-02 22:40:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608464694] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:15,051 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:15,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307018472] [2024-11-02 22:40:15,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:15,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:15,052 INFO L87 Difference]: Start difference. First operand 690 states and 965 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:15,200 INFO L93 Difference]: Finished difference Result 1427 states and 2025 transitions. [2024-11-02 22:40:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2024-11-02 22:40:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:15,202 INFO L225 Difference]: With dead ends: 1427 [2024-11-02 22:40:15,203 INFO L226 Difference]: Without dead ends: 774 [2024-11-02 22:40:15,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:15,204 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 78 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:15,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 255 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-02 22:40:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2024-11-02 22:40:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.3725743855109962) internal successors, (1061), 773 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1061 transitions. [2024-11-02 22:40:15,216 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1061 transitions. Word has length 184 [2024-11-02 22:40:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:15,217 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1061 transitions. [2024-11-02 22:40:15,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1061 transitions. [2024-11-02 22:40:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-02 22:40:15,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:15,218 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:15,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-02 22:40:15,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:15,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:15,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1428789822, now seen corresponding path program 1 times [2024-11-02 22:40:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:15,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978058174] [2024-11-02 22:40:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:15,425 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) [2024-11-02 22:40:15,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 22:40:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:15,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:15,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-02 22:40:15,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-02 22:40:15,527 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:15,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978058174] [2024-11-02 22:40:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978058174] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:15,527 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455551205] [2024-11-02 22:40:15,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:15,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:15,529 INFO L87 Difference]: Start difference. First operand 774 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:15,664 INFO L93 Difference]: Finished difference Result 1604 states and 2235 transitions. [2024-11-02 22:40:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 195 [2024-11-02 22:40:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:15,667 INFO L225 Difference]: With dead ends: 1604 [2024-11-02 22:40:15,667 INFO L226 Difference]: Without dead ends: 867 [2024-11-02 22:40:15,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:15,668 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 83 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:15,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 209 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-02 22:40:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2024-11-02 22:40:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 1.346420323325635) internal successors, (1166), 866 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1166 transitions. [2024-11-02 22:40:15,683 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1166 transitions. Word has length 195 [2024-11-02 22:40:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:15,683 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1166 transitions. [2024-11-02 22:40:15,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1166 transitions. [2024-11-02 22:40:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-02 22:40:15,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:15,685 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:15,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-02 22:40:15,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:15,886 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:15,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1690010114, now seen corresponding path program 1 times [2024-11-02 22:40:15,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:15,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925713383] [2024-11-02 22:40:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:15,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:15,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:15,890 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) [2024-11-02 22:40:15,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 22:40:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:15,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:15,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-02 22:40:16,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-02 22:40:16,039 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925713383] [2024-11-02 22:40:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1925713383] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:16,039 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287484341] [2024-11-02 22:40:16,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:16,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:16,040 INFO L87 Difference]: Start difference. First operand 867 states and 1166 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:16,084 INFO L93 Difference]: Finished difference Result 3267 states and 4412 transitions. [2024-11-02 22:40:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 225 [2024-11-02 22:40:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:16,090 INFO L225 Difference]: With dead ends: 3267 [2024-11-02 22:40:16,090 INFO L226 Difference]: Without dead ends: 2437 [2024-11-02 22:40:16,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:16,092 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 246 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:16,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 898 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2024-11-02 22:40:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2433. [2024-11-02 22:40:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 1.350328947368421) internal successors, (3284), 2432 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 3284 transitions. [2024-11-02 22:40:16,132 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 3284 transitions. Word has length 225 [2024-11-02 22:40:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:16,132 INFO L471 AbstractCegarLoop]: Abstraction has 2433 states and 3284 transitions. [2024-11-02 22:40:16,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 3284 transitions. [2024-11-02 22:40:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-02 22:40:16,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:16,135 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:16,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-02 22:40:16,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:16,336 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:16,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1388803456, now seen corresponding path program 1 times [2024-11-02 22:40:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157036084] [2024-11-02 22:40:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:16,338 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) [2024-11-02 22:40:16,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-02 22:40:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:16,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:16,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-02 22:40:16,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-02 22:40:16,455 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:16,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157036084] [2024-11-02 22:40:16,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [157036084] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:16,455 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:16,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966851740] [2024-11-02 22:40:16,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:16,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:16,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:16,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:16,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:16,456 INFO L87 Difference]: Start difference. First operand 2433 states and 3284 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:16,645 INFO L93 Difference]: Finished difference Result 5153 states and 7077 transitions. [2024-11-02 22:40:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 225 [2024-11-02 22:40:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:16,652 INFO L225 Difference]: With dead ends: 5153 [2024-11-02 22:40:16,652 INFO L226 Difference]: Without dead ends: 2757 [2024-11-02 22:40:16,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:16,655 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 97 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:16,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 252 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2024-11-02 22:40:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2757. [2024-11-02 22:40:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2756 states have (on average 1.3222060957910013) internal successors, (3644), 2756 states have internal predecessors, (3644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3644 transitions. [2024-11-02 22:40:16,711 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3644 transitions. Word has length 225 [2024-11-02 22:40:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:16,711 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 3644 transitions. [2024-11-02 22:40:16,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3644 transitions. [2024-11-02 22:40:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-02 22:40:16,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:16,715 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:16,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:16,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:16,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:16,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 644372403, now seen corresponding path program 1 times [2024-11-02 22:40:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:16,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718069059] [2024-11-02 22:40:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:16,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:16,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:16,917 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) [2024-11-02 22:40:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-02 22:40:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:17,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:17,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-02 22:40:17,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-02 22:40:17,059 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:17,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718069059] [2024-11-02 22:40:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [718069059] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:17,059 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907236389] [2024-11-02 22:40:17,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:17,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:17,060 INFO L87 Difference]: Start difference. First operand 2757 states and 3644 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2024-11-02 22:40:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:17,393 INFO L93 Difference]: Finished difference Result 5576 states and 7407 transitions. [2024-11-02 22:40:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) Word has length 250 [2024-11-02 22:40:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:17,401 INFO L225 Difference]: With dead ends: 5576 [2024-11-02 22:40:17,401 INFO L226 Difference]: Without dead ends: 2856 [2024-11-02 22:40:17,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:17,404 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 92 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:17,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 252 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 22:40:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2024-11-02 22:40:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2856. [2024-11-02 22:40:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2855 states have (on average 1.3131348511383538) internal successors, (3749), 2855 states have internal predecessors, (3749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3749 transitions. [2024-11-02 22:40:17,461 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3749 transitions. Word has length 250 [2024-11-02 22:40:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:17,461 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 3749 transitions. [2024-11-02 22:40:17,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2024-11-02 22:40:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3749 transitions. [2024-11-02 22:40:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-02 22:40:17,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:17,464 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:17,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-02 22:40:17,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:17,665 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:17,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1036748406, now seen corresponding path program 1 times [2024-11-02 22:40:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:17,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924899721] [2024-11-02 22:40:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:17,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:17,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:17,670 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) [2024-11-02 22:40:17,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-02 22:40:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:17,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:17,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-02 22:40:17,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-02 22:40:17,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:17,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924899721] [2024-11-02 22:40:17,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [924899721] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:17,791 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:17,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726262100] [2024-11-02 22:40:17,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:17,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:17,793 INFO L87 Difference]: Start difference. First operand 2856 states and 3749 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:17,942 INFO L93 Difference]: Finished difference Result 6008 states and 8016 transitions. [2024-11-02 22:40:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 262 [2024-11-02 22:40:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:17,950 INFO L225 Difference]: With dead ends: 6008 [2024-11-02 22:40:17,950 INFO L226 Difference]: Without dead ends: 3189 [2024-11-02 22:40:17,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:17,953 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 93 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:17,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 204 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2024-11-02 22:40:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3189. [2024-11-02 22:40:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3189 states, 3188 states have (on average 1.2917189460476788) internal successors, (4118), 3188 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4118 transitions. [2024-11-02 22:40:18,010 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4118 transitions. Word has length 262 [2024-11-02 22:40:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:18,011 INFO L471 AbstractCegarLoop]: Abstraction has 3189 states and 4118 transitions. [2024-11-02 22:40:18,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4118 transitions. [2024-11-02 22:40:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-02 22:40:18,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:18,015 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:18,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-02 22:40:18,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:18,216 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:18,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash 119696682, now seen corresponding path program 1 times [2024-11-02 22:40:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797128130] [2024-11-02 22:40:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:18,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:18,218 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:18,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-02 22:40:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:18,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:18,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-02 22:40:18,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-02 22:40:18,751 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:18,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797128130] [2024-11-02 22:40:18,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797128130] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:18,751 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:18,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:18,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340291054] [2024-11-02 22:40:18,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:18,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:18,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:18,752 INFO L87 Difference]: Start difference. First operand 3189 states and 4118 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:18,804 INFO L93 Difference]: Finished difference Result 9495 states and 12256 transitions. [2024-11-02 22:40:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 299 [2024-11-02 22:40:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:18,819 INFO L225 Difference]: With dead ends: 9495 [2024-11-02 22:40:18,819 INFO L226 Difference]: Without dead ends: 6343 [2024-11-02 22:40:18,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:18,823 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 69 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:18,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 325 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2024-11-02 22:40:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 6341. [2024-11-02 22:40:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6340 states have (on average 1.2869085173501578) internal successors, (8159), 6340 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8159 transitions. [2024-11-02 22:40:19,006 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8159 transitions. Word has length 299 [2024-11-02 22:40:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:19,007 INFO L471 AbstractCegarLoop]: Abstraction has 6341 states and 8159 transitions. [2024-11-02 22:40:19,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8159 transitions. [2024-11-02 22:40:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-02 22:40:19,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:19,027 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:19,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-02 22:40:19,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:19,232 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:19,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1613367898, now seen corresponding path program 1 times [2024-11-02 22:40:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718916478] [2024-11-02 22:40:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:19,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:19,234 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:19,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-02 22:40:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:19,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:19,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2024-11-02 22:40:19,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2024-11-02 22:40:19,820 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718916478] [2024-11-02 22:40:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1718916478] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:19,821 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:40:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429861843] [2024-11-02 22:40:19,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:19,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:40:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:40:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:19,822 INFO L87 Difference]: Start difference. First operand 6341 states and 8159 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:19,873 INFO L93 Difference]: Finished difference Result 9486 states and 12193 transitions. [2024-11-02 22:40:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:40:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 299 [2024-11-02 22:40:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:19,899 INFO L225 Difference]: With dead ends: 9486 [2024-11-02 22:40:19,899 INFO L226 Difference]: Without dead ends: 6343 [2024-11-02 22:40:19,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:40:19,904 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 61 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:19,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 466 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:40:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2024-11-02 22:40:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 6341. [2024-11-02 22:40:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6340 states have (on average 1.2826498422712933) internal successors, (8132), 6340 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8132 transitions. [2024-11-02 22:40:20,026 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8132 transitions. Word has length 299 [2024-11-02 22:40:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:20,027 INFO L471 AbstractCegarLoop]: Abstraction has 6341 states and 8132 transitions. [2024-11-02 22:40:20,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8132 transitions. [2024-11-02 22:40:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-02 22:40:20,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:20,033 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:20,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:20,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:20,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:20,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 876161064, now seen corresponding path program 1 times [2024-11-02 22:40:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718840440] [2024-11-02 22:40:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:20,237 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:20,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-02 22:40:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:20,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:20,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-02 22:40:20,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-02 22:40:20,352 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:20,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718840440] [2024-11-02 22:40:20,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [718840440] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:20,352 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:20,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:20,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241220690] [2024-11-02 22:40:20,353 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:20,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:20,354 INFO L87 Difference]: Start difference. First operand 6341 states and 8132 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:20,554 INFO L93 Difference]: Finished difference Result 13363 states and 17430 transitions. [2024-11-02 22:40:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 299 [2024-11-02 22:40:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:20,563 INFO L225 Difference]: With dead ends: 13363 [2024-11-02 22:40:20,563 INFO L226 Difference]: Without dead ends: 7088 [2024-11-02 22:40:20,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:20,569 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 95 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:20,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 251 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:40:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2024-11-02 22:40:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 7070. [2024-11-02 22:40:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 7069 states have (on average 1.2636865186023483) internal successors, (8933), 7069 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 8933 transitions. [2024-11-02 22:40:20,792 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 8933 transitions. Word has length 299 [2024-11-02 22:40:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:20,792 INFO L471 AbstractCegarLoop]: Abstraction has 7070 states and 8933 transitions. [2024-11-02 22:40:20,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 8933 transitions. [2024-11-02 22:40:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-02 22:40:20,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:20,800 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:20,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:21,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:21,000 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:21,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -828156331, now seen corresponding path program 1 times [2024-11-02 22:40:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819915896] [2024-11-02 22:40:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:21,005 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:21,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-02 22:40:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:21,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:40:21,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-02 22:40:21,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-02 22:40:21,229 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819915896] [2024-11-02 22:40:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [819915896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:40:21,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:40:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-02 22:40:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855276781] [2024-11-02 22:40:21,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:40:21,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 22:40:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 22:40:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:40:21,232 INFO L87 Difference]: Start difference. First operand 7070 states and 8933 transitions. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:21,687 INFO L93 Difference]: Finished difference Result 14984 states and 18933 transitions. [2024-11-02 22:40:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 22:40:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 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 308 [2024-11-02 22:40:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:21,693 INFO L225 Difference]: With dead ends: 14984 [2024-11-02 22:40:21,694 INFO L226 Difference]: Without dead ends: 4739 [2024-11-02 22:40:21,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-02 22:40:21,700 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 293 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:21,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 721 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 22:40:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2024-11-02 22:40:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3818. [2024-11-02 22:40:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 1.2887084097458736) internal successors, (4919), 3817 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 4919 transitions. [2024-11-02 22:40:21,754 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 4919 transitions. Word has length 308 [2024-11-02 22:40:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:21,754 INFO L471 AbstractCegarLoop]: Abstraction has 3818 states and 4919 transitions. [2024-11-02 22:40:21,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 4919 transitions. [2024-11-02 22:40:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-02 22:40:21,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:21,758 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:21,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:21,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:21,963 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:21,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1703634950, now seen corresponding path program 1 times [2024-11-02 22:40:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87271897] [2024-11-02 22:40:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:21,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:21,966 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:21,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-02 22:40:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:22,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:40:22,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-02 22:40:22,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-02 22:40:22,132 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87271897] [2024-11-02 22:40:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [87271897] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:40:22,133 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:40:22,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:40:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765823303] [2024-11-02 22:40:22,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:40:22,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:40:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:40:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:22,134 INFO L87 Difference]: Start difference. First operand 3818 states and 4919 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:22,324 INFO L93 Difference]: Finished difference Result 7690 states and 10023 transitions. [2024-11-02 22:40:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:40:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 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 310 [2024-11-02 22:40:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:22,329 INFO L225 Difference]: With dead ends: 7690 [2024-11-02 22:40:22,329 INFO L226 Difference]: Without dead ends: 3647 [2024-11-02 22:40:22,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:40:22,332 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 38 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:22,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 300 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 22:40:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2024-11-02 22:40:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3647. [2024-11-02 22:40:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3646 states have (on average 1.2874382885353812) internal successors, (4694), 3646 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4694 transitions. [2024-11-02 22:40:22,444 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4694 transitions. Word has length 310 [2024-11-02 22:40:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:22,445 INFO L471 AbstractCegarLoop]: Abstraction has 3647 states and 4694 transitions. [2024-11-02 22:40:22,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4694 transitions. [2024-11-02 22:40:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-02 22:40:22,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:40:22,449 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:22,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:22,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:22,653 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:40:22,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:40:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1448829880, now seen corresponding path program 1 times [2024-11-02 22:40:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:40:22,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161149894] [2024-11-02 22:40:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:40:22,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:22,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:40:22,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:40:22,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-02 22:40:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:40:22,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:40:22,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:40:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-02 22:40:22,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:40:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-02 22:40:22,877 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:40:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161149894] [2024-11-02 22:40:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [161149894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:40:22,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:40:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-02 22:40:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395622179] [2024-11-02 22:40:22,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:40:22,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 22:40:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:40:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 22:40:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:40:22,879 INFO L87 Difference]: Start difference. First operand 3647 states and 4694 transitions. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:40:23,129 INFO L93 Difference]: Finished difference Result 5090 states and 6525 transitions. [2024-11-02 22:40:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 22:40:23,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 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 310 [2024-11-02 22:40:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:40:23,130 INFO L225 Difference]: With dead ends: 5090 [2024-11-02 22:40:23,130 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 22:40:23,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:40:23,133 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 99 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 22:40:23,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 462 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 22:40:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 22:40:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 22:40:23,133 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) [2024-11-02 22:40:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 22:40:23,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2024-11-02 22:40:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:40:23,134 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 22:40:23,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:40:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 22:40:23,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 22:40:23,136 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 22:40:23,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-02 22:40:23,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:40:23,339 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:40:23,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 22:40:24,880 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 22:40:24,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:40:24 BoogieIcfgContainer [2024-11-02 22:40:24,890 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 22:40:24,890 INFO L158 Benchmark]: Toolchain (without parser) took 15146.14ms. Allocated memory was 211.8MB in the beginning and 577.8MB in the end (delta: 366.0MB). Free memory was 174.9MB in the beginning and 339.8MB in the end (delta: -164.9MB). Peak memory consumption was 352.6MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,890 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 211.8MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-02 22:40:24,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.38ms. Allocated memory is still 211.8MB. Free memory was 174.5MB in the beginning and 156.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.14ms. Allocated memory is still 211.8MB. Free memory was 156.7MB in the beginning and 154.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,891 INFO L158 Benchmark]: Boogie Preprocessor took 62.98ms. Allocated memory is still 211.8MB. Free memory was 154.2MB in the beginning and 151.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,891 INFO L158 Benchmark]: RCFGBuilder took 518.63ms. Allocated memory is still 211.8MB. Free memory was 151.0MB in the beginning and 114.1MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,891 INFO L158 Benchmark]: TraceAbstraction took 14222.36ms. Allocated memory was 211.8MB in the beginning and 577.8MB in the end (delta: 366.0MB). Free memory was 113.3MB in the beginning and 339.8MB in the end (delta: -226.5MB). Peak memory consumption was 290.7MB. Max. memory is 8.0GB. [2024-11-02 22:40:24,892 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 211.8MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.38ms. Allocated memory is still 211.8MB. Free memory was 174.5MB in the beginning and 156.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.14ms. Allocated memory is still 211.8MB. Free memory was 156.7MB in the beginning and 154.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.98ms. Allocated memory is still 211.8MB. Free memory was 154.2MB in the beginning and 151.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 518.63ms. Allocated memory is still 211.8MB. Free memory was 151.0MB in the beginning and 114.1MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 14222.36ms. Allocated memory was 211.8MB in the beginning and 577.8MB in the end (delta: 366.0MB). Free memory was 113.3MB in the beginning and 339.8MB in the end (delta: -226.5MB). Peak memory consumption was 290.7MB. 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: 624]: 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 CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 21, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1971 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1971 mSDsluCounter, 7314 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3713 mSDsCounter, 485 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3559 IncrementalHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 485 mSolverCounterUnsat, 3601 mSDtfsCounter, 3559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7678 GetRequests, 7634 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7070occurred in iteration=18, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 21 MinimizatonAttempts, 947 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 3855 NumberOfCodeBlocks, 3855 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7668 ConstructedInterpolants, 0 QuantifiedInterpolants, 11809 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4777 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 42 InterpolantComputations, 38 PerfectInterpolantSequences, 22594/22644 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((((((((((((((((4432 == s__state) && (5 != blastFlag)) || (2 == blastFlag)) || ((4384 == s__state) && (1 == blastFlag))) || ((((5 != blastFlag) && (0 != s__hit)) && (4352 == s__state)) && (3 == s__s3__tmp__next_state___0))) || (((4384 != s__s3__tmp__next_state___0) && (0 != s__hit)) && (3 == s__state))) || ((5 != blastFlag) && (4416 == s__state))) || ((0 == blastFlag) && (12292 == s__state))) || ((5 != blastFlag) && (4512 == s__state))) || ((5 != blastFlag) && (4528 == s__state))) || ((((((((((((5 != blastFlag) && (4384 != s__state)) && (16384 != s__state)) && (4560 == s__s3__tmp__next_state___0)) && (4368 != s__state)) && (4099 != s__state)) && (4096 != s__state)) && (0 == s__hit)) && (4385 != s__state)) && (12292 != s__state)) && (20480 != s__state)) && (4369 != s__state))) || ((5 != blastFlag) && (4496 == s__state))) || ((5 != blastFlag) && (4480 == s__state))) || ((4368 == s__state) && (0 == blastFlag))) || ((4448 == s__state) && (5 != blastFlag))) || ((5 != blastFlag) && (4464 == s__state))) RESULT: Ultimate proved your program to be correct! [2024-11-02 22:40:24,911 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...