/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 15:22:40,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 15:22:40,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 15:22:40,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 15:22:40,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 15:22:40,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 15:22:40,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 15:22:40,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 15:22:40,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 15:22:40,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 15:22:40,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 15:22:40,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 15:22:40,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 15:22:40,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 15:22:40,798 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 15:22:40,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 15:22:40,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 15:22:40,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 15:22:40,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 15:22:40,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 15:22:40,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 15:22:40,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 15:22:40,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 15:22:40,804 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 15:22:40,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 15:22:40,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 15:22:40,805 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 15:22:40,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 15:22:40,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 15:22:40,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 15:22:40,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 15:22:40,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 15:22:40,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 15:22:40,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 15:22:40,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 15:22:40,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 15:22:40,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 15:22:40,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 15:22:40,807 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 15:22:40,807 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 15:22:40,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 15:22:40,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 15:22:40,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 15:22:40,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 15:22:40,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 15:22:40,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 15:22:41,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 15:22:41,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 15:22:41,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 15:22:41,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 15:22:41,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 15:22:42,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 15:22:42,485 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 15:22:42,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 15:22:42,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4706849/1d248cb32ada439bb82e0c39ab0f057d/FLAGf11e38575 [2024-11-03 15:22:42,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4706849/1d248cb32ada439bb82e0c39ab0f057d [2024-11-03 15:22:42,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 15:22:42,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 15:22:42,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 15:22:42,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 15:22:42,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 15:22:42,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74724f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42, skipping insertion in model container [2024-11-03 15:22:42,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 15:22:42,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 15:22:42,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 15:22:42,654 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 15:22:42,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 15:22:42,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 15:22:42,679 INFO L204 MainTranslator]: Completed translation [2024-11-03 15:22:42,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42 WrapperNode [2024-11-03 15:22:42,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 15:22:42,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 15:22:42,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 15:22:42,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 15:22:42,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,728 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-11-03 15:22:42,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 15:22:42,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 15:22:42,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 15:22:42,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 15:22:42,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,754 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-03 15:22:42,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 15:22:42,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 15:22:42,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 15:22:42,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 15:22:42,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (1/1) ... [2024-11-03 15:22:42,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 15:22:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 15:22:42,805 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) [2024-11-03 15:22:42,807 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 [2024-11-03 15:22:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 15:22:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 15:22:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 15:22:42,827 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 15:22:42,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 15:22:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 15:22:42,884 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 15:22:42,885 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 15:22:43,079 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-03 15:22:43,079 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 15:22:43,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 15:22:43,090 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 15:22:43,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:22:43 BoogieIcfgContainer [2024-11-03 15:22:43,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 15:22:43,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 15:22:43,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 15:22:43,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 15:22:43,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:22:42" (1/3) ... [2024-11-03 15:22:43,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24738277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:22:43, skipping insertion in model container [2024-11-03 15:22:43,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:42" (2/3) ... [2024-11-03 15:22:43,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24738277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:22:43, skipping insertion in model container [2024-11-03 15:22:43,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:22:43" (3/3) ... [2024-11-03 15:22:43,096 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries2.c [2024-11-03 15:22:43,107 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 15:22:43,108 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 15:22:43,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 15:22:43,151 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;@44650041, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 15:22:43,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 15:22:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 15:22:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 15:22:43,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:43,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:43,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:43,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1909413201, now seen corresponding path program 1 times [2024-11-03 15:22:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606415984] [2024-11-03 15:22:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:43,172 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:43,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:43,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 15:22:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:43,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:43,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:43,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:43,323 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606415984] [2024-11-03 15:22:43,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [606415984] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:43,324 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:43,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 15:22:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028609398] [2024-11-03 15:22:43,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:43,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 15:22:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 15:22:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:43,357 INFO L87 Difference]: Start difference. First operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 15:22:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:43,398 INFO L93 Difference]: Finished difference Result 75 states and 108 transitions. [2024-11-03 15:22:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 15:22:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 15:22:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:43,405 INFO L225 Difference]: With dead ends: 75 [2024-11-03 15:22:43,405 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 15:22:43,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:43,409 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:43,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 15:22:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 15:22:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 15:22:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-03 15:22:43,439 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2024-11-03 15:22:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:43,439 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-03 15:22:43,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 15:22:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-03 15:22:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 15:22:43,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:43,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:43,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 15:22:43,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:43,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:43,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2092151088, now seen corresponding path program 1 times [2024-11-03 15:22:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140961613] [2024-11-03 15:22:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:43,648 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:43,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:43,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 15:22:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:43,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 15:22:43,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:43,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:43,749 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140961613] [2024-11-03 15:22:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1140961613] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:43,749 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 15:22:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282279603] [2024-11-03 15:22:43,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:43,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 15:22:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 15:22:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 15:22:43,751 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:43,764 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-03 15:22:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 15:22:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:43,765 INFO L225 Difference]: With dead ends: 43 [2024-11-03 15:22:43,765 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 15:22:43,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 15:22:43,766 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:43,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 15:22:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 15:22:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 15:22:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-03 15:22:43,772 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 17 [2024-11-03 15:22:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:43,772 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-03 15:22:43,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-03 15:22:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-03 15:22:43,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:43,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:43,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 15:22:43,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:43,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:43,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1014348991, now seen corresponding path program 1 times [2024-11-03 15:22:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:43,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607563750] [2024-11-03 15:22:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:43,976 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:43,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:43,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:43,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 15:22:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:44,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 15:22:44,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:44,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 15:22:44,103 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607563750] [2024-11-03 15:22:44,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [607563750] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:44,104 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:44,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2024-11-03 15:22:44,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489648665] [2024-11-03 15:22:44,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:44,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 15:22:44,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 15:22:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:44,105 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:44,192 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2024-11-03 15:22:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 15:22:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-03 15:22:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:44,197 INFO L225 Difference]: With dead ends: 76 [2024-11-03 15:22:44,197 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 15:22:44,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:44,198 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:44,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 15:22:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 15:22:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-03 15:22:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-03 15:22:44,206 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 19 [2024-11-03 15:22:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:44,206 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-03 15:22:44,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-03 15:22:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-03 15:22:44,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:44,207 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:44,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 15:22:44,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:44,413 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:44,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 683802393, now seen corresponding path program 1 times [2024-11-03 15:22:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417063300] [2024-11-03 15:22:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:44,414 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:44,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:44,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:44,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 15:22:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:44,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 15:22:44,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:44,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:44,525 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:44,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417063300] [2024-11-03 15:22:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1417063300] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:44,525 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 15:22:44,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126441083] [2024-11-03 15:22:44,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:44,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 15:22:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 15:22:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 15:22:44,527 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:44,546 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-11-03 15:22:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 15:22:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-03 15:22:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:44,548 INFO L225 Difference]: With dead ends: 42 [2024-11-03 15:22:44,548 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 15:22:44,548 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 [2024-11-03 15:22:44,549 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:44,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 15:22:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-03 15:22:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-03 15:22:44,560 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 37 [2024-11-03 15:22:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:44,560 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-03 15:22:44,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-03 15:22:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 15:22:44,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:44,565 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:44,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 15:22:44,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:44,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:44,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689165, now seen corresponding path program 1 times [2024-11-03 15:22:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587520838] [2024-11-03 15:22:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:44,770 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:44,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:44,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 15:22:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:44,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 15:22:44,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:44,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:44,862 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:44,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587520838] [2024-11-03 15:22:44,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1587520838] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:44,862 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:44,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 15:22:44,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291467728] [2024-11-03 15:22:44,862 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:44,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:44,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:44,863 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:44,891 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2024-11-03 15:22:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-11-03 15:22:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:44,893 INFO L225 Difference]: With dead ends: 54 [2024-11-03 15:22:44,893 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 15:22:44,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:44,893 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:44,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 15:22:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-03 15:22:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-03 15:22:44,900 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 40 [2024-11-03 15:22:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:44,900 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-03 15:22:44,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-03 15:22:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-03 15:22:44,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:44,901 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:44,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 15:22:45,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,107 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:45,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 35157834, now seen corresponding path program 1 times [2024-11-03 15:22:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766723223] [2024-11-03 15:22:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:45,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:45,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 15:22:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:45,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 15:22:45,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:45,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:45,183 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766723223] [2024-11-03 15:22:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1766723223] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:45,183 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 15:22:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259996748] [2024-11-03 15:22:45,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:45,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:45,185 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:45,207 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2024-11-03 15:22:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-03 15:22:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:45,209 INFO L225 Difference]: With dead ends: 71 [2024-11-03 15:22:45,209 INFO L226 Difference]: Without dead ends: 53 [2024-11-03 15:22:45,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:45,210 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:45,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-03 15:22:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-03 15:22:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-11-03 15:22:45,220 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 42 [2024-11-03 15:22:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:45,220 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-11-03 15:22:45,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-11-03 15:22:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 15:22:45,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:45,221 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-03 15:22:45,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 15:22:45,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:45,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1635340726, now seen corresponding path program 1 times [2024-11-03 15:22:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:45,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975614522] [2024-11-03 15:22:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:45,423 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:45,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:45,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 15:22:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:45,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:45,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:45,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 15:22:45,562 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975614522] [2024-11-03 15:22:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [975614522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:45,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 15:22:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063105393] [2024-11-03 15:22:45,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:45,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 15:22:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:45,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 15:22:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:45,563 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:45,606 INFO L93 Difference]: Finished difference Result 87 states and 114 transitions. [2024-11-03 15:22:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 15:22:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-03 15:22:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:45,608 INFO L225 Difference]: With dead ends: 87 [2024-11-03 15:22:45,609 INFO L226 Difference]: Without dead ends: 65 [2024-11-03 15:22:45,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:45,609 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:45,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 188 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-03 15:22:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-03 15:22:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2024-11-03 15:22:45,621 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 48 [2024-11-03 15:22:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:45,622 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-03 15:22:45,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2024-11-03 15:22:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 15:22:45,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:45,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:45,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 15:22:45,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:45,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash 657433930, now seen corresponding path program 2 times [2024-11-03 15:22:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119743299] [2024-11-03 15:22:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:45,825 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:45,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:45,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 15:22:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:45,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:45,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-03 15:22:45,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-03 15:22:45,916 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119743299] [2024-11-03 15:22:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1119743299] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:45,917 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 15:22:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523393826] [2024-11-03 15:22:45,917 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:45,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:45,918 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:45,941 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2024-11-03 15:22:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2024-11-03 15:22:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:45,942 INFO L225 Difference]: With dead ends: 71 [2024-11-03 15:22:45,942 INFO L226 Difference]: Without dead ends: 65 [2024-11-03 15:22:45,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:45,943 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:45,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-03 15:22:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-03 15:22:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.206896551724138) internal successors, (70), 59 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2024-11-03 15:22:45,951 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 54 [2024-11-03 15:22:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:45,951 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2024-11-03 15:22:45,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2024-11-03 15:22:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 15:22:45,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:45,955 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 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] [2024-11-03 15:22:45,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 15:22:46,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:46,157 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:46,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash 923057875, now seen corresponding path program 1 times [2024-11-03 15:22:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442090831] [2024-11-03 15:22:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:46,158 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:46,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:46,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 15:22:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:46,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:46,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:46,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:46,338 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442090831] [2024-11-03 15:22:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1442090831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:46,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:46,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 15:22:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987198321] [2024-11-03 15:22:46,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:46,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 15:22:46,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:46,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 15:22:46,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:46,339 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:46,421 INFO L93 Difference]: Finished difference Result 106 states and 133 transitions. [2024-11-03 15:22:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 15:22:46,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-03 15:22:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:46,422 INFO L225 Difference]: With dead ends: 106 [2024-11-03 15:22:46,422 INFO L226 Difference]: Without dead ends: 99 [2024-11-03 15:22:46,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:46,423 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:46,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 160 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 15:22:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-03 15:22:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-03 15:22:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 93 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-03 15:22:46,437 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 74 [2024-11-03 15:22:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:46,437 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-03 15:22:46,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-03 15:22:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:22:46,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:46,438 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:46,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 15:22:46,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:46,639 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:46,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2022113907, now seen corresponding path program 2 times [2024-11-03 15:22:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:46,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994210621] [2024-11-03 15:22:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:46,640 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:46,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:46,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 15:22:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:46,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:46,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 15:22:47,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:47,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:47,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-03 15:22:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 15:22:47,260 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994210621] [2024-11-03 15:22:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1994210621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:47,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-03 15:22:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820116031] [2024-11-03 15:22:47,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:47,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 15:22:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 15:22:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-03 15:22:47,262 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:47,958 INFO L93 Difference]: Finished difference Result 223 states and 285 transitions. [2024-11-03 15:22:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 15:22:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:22:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:47,959 INFO L225 Difference]: With dead ends: 223 [2024-11-03 15:22:47,959 INFO L226 Difference]: Without dead ends: 145 [2024-11-03 15:22:47,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 15:22:47,961 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 62 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:47,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 410 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 15:22:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-03 15:22:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 126. [2024-11-03 15:22:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 120 states have internal predecessors, (150), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2024-11-03 15:22:47,969 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 108 [2024-11-03 15:22:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:47,969 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2024-11-03 15:22:47,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2024-11-03 15:22:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:22:47,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:47,970 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:47,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 15:22:48,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:48,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:48,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash 111071349, now seen corresponding path program 1 times [2024-11-03 15:22:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519707134] [2024-11-03 15:22:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:48,175 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:48,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 15:22:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:48,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 15:22:48,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 221 proven. 40 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-03 15:22:48,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:48,573 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 15:22:48,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-03 15:22:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 225 proven. 36 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-03 15:22:48,620 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519707134] [2024-11-03 15:22:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519707134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:48,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-03 15:22:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829776353] [2024-11-03 15:22:48,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:48,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 15:22:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 15:22:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-03 15:22:48,622 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:49,065 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2024-11-03 15:22:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 15:22:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:22:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:49,067 INFO L225 Difference]: With dead ends: 315 [2024-11-03 15:22:49,067 INFO L226 Difference]: Without dead ends: 262 [2024-11-03 15:22:49,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 15:22:49,068 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 92 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:49,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 326 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 15:22:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-03 15:22:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 227. [2024-11-03 15:22:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.2636363636363637) internal successors, (278), 221 states have internal predecessors, (278), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2024-11-03 15:22:49,101 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 108 [2024-11-03 15:22:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:49,101 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2024-11-03 15:22:49,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2024-11-03 15:22:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:22:49,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:49,102 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:49,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:49,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:49,305 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:49,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1528338505, now seen corresponding path program 2 times [2024-11-03 15:22:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909701356] [2024-11-03 15:22:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:49,306 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:49,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 15:22:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:49,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:49,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 94 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-03 15:22:49,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:49,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:49,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 15:22:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 247 proven. 92 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-03 15:22:49,983 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909701356] [2024-11-03 15:22:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909701356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:49,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:49,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 15:22:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740939172] [2024-11-03 15:22:49,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:49,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 15:22:49,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 15:22:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-03 15:22:49,985 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:50,613 INFO L93 Difference]: Finished difference Result 339 states and 432 transitions. [2024-11-03 15:22:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 15:22:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:22:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:50,615 INFO L225 Difference]: With dead ends: 339 [2024-11-03 15:22:50,615 INFO L226 Difference]: Without dead ends: 265 [2024-11-03 15:22:50,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 15:22:50,616 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 173 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:50,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 465 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 15:22:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-03 15:22:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 254. [2024-11-03 15:22:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 247 states have (on average 1.271255060728745) internal successors, (314), 248 states have internal predecessors, (314), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 325 transitions. [2024-11-03 15:22:50,630 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 325 transitions. Word has length 108 [2024-11-03 15:22:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:50,630 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 325 transitions. [2024-11-03 15:22:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 325 transitions. [2024-11-03 15:22:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:22:50,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:50,631 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:50,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:50,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:50,832 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:50,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1973134901, now seen corresponding path program 3 times [2024-11-03 15:22:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:50,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181751811] [2024-11-03 15:22:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:50,833 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:50,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:50,834 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:50,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 15:22:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:50,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-03 15:22:50,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:52,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:52,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 35 [2024-11-03 15:22:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 131 proven. 7 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-03 15:22:52,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:52,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:52,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 17 [2024-11-03 15:22:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 134 proven. 4 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-03 15:22:53,100 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:53,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181751811] [2024-11-03 15:22:53,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [181751811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:53,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:53,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-11-03 15:22:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258920986] [2024-11-03 15:22:53,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:53,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 15:22:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 15:22:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-03 15:22:53,102 INFO L87 Difference]: Start difference. First operand 254 states and 325 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 15:22:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:55,075 INFO L93 Difference]: Finished difference Result 567 states and 725 transitions. [2024-11-03 15:22:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-03 15:22:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 108 [2024-11-03 15:22:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:55,079 INFO L225 Difference]: With dead ends: 567 [2024-11-03 15:22:55,079 INFO L226 Difference]: Without dead ends: 409 [2024-11-03 15:22:55,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=245, Invalid=1477, Unknown=0, NotChecked=0, Total=1722 [2024-11-03 15:22:55,081 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 55 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:55,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 354 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 15:22:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-03 15:22:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 321. [2024-11-03 15:22:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 312 states have internal predecessors, (393), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-03 15:22:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 410 transitions. [2024-11-03 15:22:55,106 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 410 transitions. Word has length 108 [2024-11-03 15:22:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:55,107 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 410 transitions. [2024-11-03 15:22:55,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 15:22:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 410 transitions. [2024-11-03 15:22:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:22:55,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:55,108 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:55,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 15:22:55,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:55,311 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash 756981175, now seen corresponding path program 4 times [2024-11-03 15:22:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703665984] [2024-11-03 15:22:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:55,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:55,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 15:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:55,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-03 15:22:55,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:57,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:57,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2024-11-03 15:22:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 47 proven. 360 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-03 15:22:57,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:58,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:58,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 17 [2024-11-03 15:22:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 65 proven. 342 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-03 15:22:58,708 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703665984] [2024-11-03 15:22:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [703665984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:58,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2024-11-03 15:22:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200489753] [2024-11-03 15:22:58,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:58,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-03 15:22:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-03 15:22:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2024-11-03 15:22:58,709 INFO L87 Difference]: Start difference. First operand 321 states and 410 transitions. Second operand has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:23:13,032 INFO L93 Difference]: Finished difference Result 1040 states and 1347 transitions. [2024-11-03 15:23:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-03 15:23:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:23:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:23:13,035 INFO L225 Difference]: With dead ends: 1040 [2024-11-03 15:23:13,036 INFO L226 Difference]: Without dead ends: 954 [2024-11-03 15:23:13,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5524 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=2175, Invalid=14855, Unknown=0, NotChecked=0, Total=17030 [2024-11-03 15:23:13,040 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 204 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-03 15:23:13,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 752 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-03 15:23:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-03 15:23:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 878. [2024-11-03 15:23:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 869 states have (on average 1.2761795166858458) internal successors, (1109), 869 states have internal predecessors, (1109), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-03 15:23:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1126 transitions. [2024-11-03 15:23:13,155 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1126 transitions. Word has length 108 [2024-11-03 15:23:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:23:13,155 INFO L471 AbstractCegarLoop]: Abstraction has 878 states and 1126 transitions. [2024-11-03 15:23:13,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1126 transitions. [2024-11-03 15:23:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:23:13,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:23:13,158 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:23:13,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Forceful destruction successful, exit code 0 [2024-11-03 15:23:13,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:13,362 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:23:13,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:23:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 170175161, now seen corresponding path program 5 times [2024-11-03 15:23:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:23:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477385733] [2024-11-03 15:23:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:23:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:23:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:13,364 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:23:13,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 15:23:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:23:13,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:23:13,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:23:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 205 proven. 196 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-03 15:23:13,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:23:14,107 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 15:23:14,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-03 15:23:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 208 proven. 193 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-03 15:23:14,219 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:23:14,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477385733] [2024-11-03 15:23:14,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [477385733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:23:14,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:23:14,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2024-11-03 15:23:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273669191] [2024-11-03 15:23:14,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:23:14,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-03 15:23:14,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:23:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-03 15:23:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-03 15:23:14,220 INFO L87 Difference]: Start difference. First operand 878 states and 1126 transitions. Second operand has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:23:15,901 INFO L93 Difference]: Finished difference Result 2610 states and 3352 transitions. [2024-11-03 15:23:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-03 15:23:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:23:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:23:15,907 INFO L225 Difference]: With dead ends: 2610 [2024-11-03 15:23:15,907 INFO L226 Difference]: Without dead ends: 2185 [2024-11-03 15:23:15,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=526, Invalid=3634, Unknown=0, NotChecked=0, Total=4160 [2024-11-03 15:23:15,909 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 168 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 15:23:15,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 577 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 15:23:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2024-11-03 15:23:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 1051. [2024-11-03 15:23:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1042 states have (on average 1.2840690978886755) internal successors, (1338), 1042 states have internal predecessors, (1338), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-03 15:23:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1355 transitions. [2024-11-03 15:23:16,024 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1355 transitions. Word has length 108 [2024-11-03 15:23:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:23:16,024 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1355 transitions. [2024-11-03 15:23:16,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1355 transitions. [2024-11-03 15:23:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:23:16,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:23:16,026 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:23:16,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-03 15:23:16,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:16,228 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:23:16,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:23:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash 192807415, now seen corresponding path program 6 times [2024-11-03 15:23:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:23:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894665571] [2024-11-03 15:23:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:23:16,229 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:23:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:16,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:23:16,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 15:23:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:23:16,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 15:23:16,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:23:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 402 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-03 15:23:16,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:23:17,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:23:17,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 15:23:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 402 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-03 15:23:17,310 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:23:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894665571] [2024-11-03 15:23:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [894665571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:23:17,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:23:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2024-11-03 15:23:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153490007] [2024-11-03 15:23:17,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:23:17,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-03 15:23:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:23:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-03 15:23:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-03 15:23:17,311 INFO L87 Difference]: Start difference. First operand 1051 states and 1355 transitions. Second operand has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 30 states have internal predecessors, (119), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:23:18,191 INFO L93 Difference]: Finished difference Result 1540 states and 1988 transitions. [2024-11-03 15:23:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 15:23:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 30 states have internal predecessors, (119), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 15:23:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:23:18,195 INFO L225 Difference]: With dead ends: 1540 [2024-11-03 15:23:18,195 INFO L226 Difference]: Without dead ends: 1239 [2024-11-03 15:23:18,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1359, Unknown=0, NotChecked=0, Total=1560 [2024-11-03 15:23:18,196 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 15:23:18,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 797 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 15:23:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2024-11-03 15:23:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1193. [2024-11-03 15:23:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1184 states have (on average 1.28125) internal successors, (1517), 1184 states have internal predecessors, (1517), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-03 15:23:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1534 transitions. [2024-11-03 15:23:18,317 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1534 transitions. Word has length 108 [2024-11-03 15:23:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:23:18,317 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1534 transitions. [2024-11-03 15:23:18,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 30 states have internal predecessors, (119), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:23:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1534 transitions. [2024-11-03 15:23:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 15:23:18,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:23:18,319 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:23:18,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 15:23:18,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:18,521 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:23:18,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:23:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash -609406221, now seen corresponding path program 7 times [2024-11-03 15:23:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:23:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389902854] [2024-11-03 15:23:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:23:18,522 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:23:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:18,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:23:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 15:23:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 15:23:18,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 15:23:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 15:23:18,656 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 15:23:18,656 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 15:23:18,657 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 15:23:18,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Ended with exit code 0 [2024-11-03 15:23:18,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:23:18,860 INFO L407 BasicCegarLoop]: Path program histogram: [7, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-03 15:23:18,898 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 15:23:18,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:23:18 BoogieIcfgContainer [2024-11-03 15:23:18,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 15:23:18,900 INFO L158 Benchmark]: Toolchain (without parser) took 36389.68ms. Allocated memory was 211.8MB in the beginning and 367.0MB in the end (delta: 155.2MB). Free memory was 180.0MB in the beginning and 240.4MB in the end (delta: -60.4MB). Peak memory consumption was 95.8MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.11ms. Allocated memory is still 211.8MB. Free memory was 179.5MB in the beginning and 166.4MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.98ms. Allocated memory is still 211.8MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: Boogie Preprocessor took 40.75ms. Allocated memory is still 211.8MB. Free memory was 164.3MB in the beginning and 162.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: RCFGBuilder took 320.69ms. Allocated memory is still 211.8MB. Free memory was 162.2MB in the beginning and 145.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,901 INFO L158 Benchmark]: TraceAbstraction took 35808.06ms. Allocated memory was 211.8MB in the beginning and 367.0MB in the end (delta: 155.2MB). Free memory was 144.9MB in the beginning and 240.4MB in the end (delta: -95.5MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. [2024-11-03 15:23:18,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.11ms. Allocated memory is still 211.8MB. Free memory was 179.5MB in the beginning and 166.4MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.98ms. Allocated memory is still 211.8MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.75ms. Allocated memory is still 211.8MB. Free memory was 164.3MB in the beginning and 162.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 320.69ms. Allocated memory is still 211.8MB. Free memory was 162.2MB in the beginning and 145.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 35808.06ms. Allocated memory was 211.8MB in the beginning and 367.0MB in the end (delta: 155.2MB). Free memory was 144.9MB in the beginning and 240.4MB in the end (delta: -95.5MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L56] int x, y, z, w; [L57] x = __VERIFIER_nondet_int() [L58] y = __VERIFIER_nondet_int() [L59] z = __VERIFIER_nondet_int() [L60] w = __VERIFIER_nondet_int() [L61] CALL, EXPR solve(x, y, z, w) [L44] CALL, EXPR check_domain(s0) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s0) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s1) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L44] RET, EXPR check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s2) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L45] CALL, EXPR check_domain(s3) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L45] RET, EXPR check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] COND TRUE check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) VAL [s0=2, s1=0, s2=2, s3=0] [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L47] CALL, EXPR check_sum(s0, s1, s2, s3) [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L34] int i = 0; VAL [i=0, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=0, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=1, s={6:0}, sum=1] [L36] j++ VAL [i=0, j=2, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=3, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=3, s={6:0}, sum=2] [L36] j++ VAL [i=0, j=4, s={6:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=0, s={6:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=1, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=1, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=2, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=3, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=4, s={6:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=1, s={6:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=2, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=2, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=0, s={6:0}, sum=1] [L36] j++ VAL [i=2, j=1, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=2, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=2, s={6:0}, sum=2] [L36] j++ VAL [i=2, j=3, s={6:0}, sum=2] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=4, s={6:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=2, s={6:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=3, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=3, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=2, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=3, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=4, s={6:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=3, s={6:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=4, s={6:0}] [L34] COND FALSE !(i < 4) VAL [s={6:0}] [L40] return 1; [L33] int s[4] = {s0, s1, s2, s3}; [L40] return 1; VAL [\result=1] [L47] RET, EXPR check_sum(s0, s1, s2, s3) [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L46-L47] COND TRUE s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L48] return 1; VAL [\result=1] [L61] RET, EXPR solve(x, y, z, w) [L61] CALL __VERIFIER_assert(!solve(x, y, z, w)) [L18] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.7s, OverallIterations: 17, TraceHistogramMax: 16, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 918 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 913 mSDsluCounter, 4991 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4310 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6146 IncrementalHoareTripleChecker+Invalid, 6197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 681 mSDtfsCounter, 6146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2385 GetRequests, 1984 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8215 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1193occurred in iteration=16, InterpolantAutomatonStates: 350, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 1411 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1212 NumberOfCodeBlocks, 1212 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2176 ConstructedInterpolants, 2 QuantifiedInterpolants, 11698 SizeOfPredicates, 52 NumberOfNonLiveVariables, 2329 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 4956/7304 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-03 15:23:18,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...