/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-sendmoremoney.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:28:23,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:28:23,291 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 00:28:23,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:28:23,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:28:23,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:28:23,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:28:23,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:28:23,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:28:23,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:28:23,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:28:23,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:28:23,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:28:23,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:28:23,335 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:28:23,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:28:23,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:28:23,335 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:28:23,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:28:23,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:28:23,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:28:23,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:28:23,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:28:23,339 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:28:23,339 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:28:23,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:28:23,339 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:28:23,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:28:23,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:28:23,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:28:23,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:28:23,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:28:23,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:28:23,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:28:23,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:28:23,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:28:23,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:28:23,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:28:23,343 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:28:23,343 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:28:23,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:28:23,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:28:23,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:28:23,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:28:23,344 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:23,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:28:23,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:28:23,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:28:23,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:28:23,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:28:23,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-sendmoremoney.c [2024-11-03 00:28:25,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:28:25,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:28:25,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-sendmoremoney.c [2024-11-03 00:28:25,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ef02fb7a/65c51ee9a8184dd2b490e2f45fed83d2/FLAGc0ac7e3cd [2024-11-03 00:28:25,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ef02fb7a/65c51ee9a8184dd2b490e2f45fed83d2 [2024-11-03 00:28:25,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:28:25,341 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:28:25,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:28:25,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:28:25,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:28:25,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3cdd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25, skipping insertion in model container [2024-11-03 00:28:25,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:28:25,486 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-sendmoremoney.c[614,627] [2024-11-03 00:28:25,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:28:25,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:28:25,540 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-sendmoremoney.c[614,627] [2024-11-03 00:28:25,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:28:25,571 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:28:25,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25 WrapperNode [2024-11-03 00:28:25,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:28:25,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:28:25,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:28:25,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:28:25,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,612 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 184 [2024-11-03 00:28:25,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:28:25,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:28:25,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:28:25,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:28:25,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,635 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-03 00:28:25,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:28:25,650 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:28:25,650 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:28:25,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:28:25,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (1/1) ... [2024-11-03 00:28:25,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:28:25,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:25,696 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 00:28:25,703 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 00:28:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:28:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:28:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 00:28:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 00:28:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 00:28:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 00:28:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 00:28:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 00:28:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:28:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:28:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain_0 [2024-11-03 00:28:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain_0 [2024-11-03 00:28:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain_1 [2024-11-03 00:28:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain_1 [2024-11-03 00:28:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 00:28:25,849 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:28:25,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:28:26,112 INFO L? ?]: Removed 78 outVars from TransFormulas that were not future-live. [2024-11-03 00:28:26,113 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:28:26,125 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:28:26,126 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 00:28:26,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:28:26 BoogieIcfgContainer [2024-11-03 00:28:26,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:28:26,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:28:26,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:28:26,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:28:26,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:28:25" (1/3) ... [2024-11-03 00:28:26,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad68b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:28:26, skipping insertion in model container [2024-11-03 00:28:26,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:25" (2/3) ... [2024-11-03 00:28:26,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad68b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:28:26, skipping insertion in model container [2024-11-03 00:28:26,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:28:26" (3/3) ... [2024-11-03 00:28:26,135 INFO L112 eAbstractionObserver]: Analyzing ICFG color-sendmoremoney.c [2024-11-03 00:28:26,151 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:28:26,152 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:28:26,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:28:26,229 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;@a189d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:28:26,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:28:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 00:28:26,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:26,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:26,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:26,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash -871385011, now seen corresponding path program 1 times [2024-11-03 00:28:26,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146429384] [2024-11-03 00:28:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:26,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:26,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:26,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:26,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-03 00:28:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:26,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:28:26,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:26,424 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 00:28:26,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:26,464 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 00:28:26,465 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:26,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146429384] [2024-11-03 00:28:26,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146429384] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:26,466 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:26,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 00:28:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648158037] [2024-11-03 00:28:26,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:26,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 00:28:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 00:28:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:28:26,497 INFO L87 Difference]: Start difference. First operand has 58 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 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 00:28:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:26,557 INFO L93 Difference]: Finished difference Result 113 states and 156 transitions. [2024-11-03 00:28:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 00:28:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 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 27 [2024-11-03 00:28:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:26,570 INFO L225 Difference]: With dead ends: 113 [2024-11-03 00:28:26,570 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:26,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 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 00:28:26,576 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 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 00:28:26,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-03 00:28:26,615 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 27 [2024-11-03 00:28:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:26,618 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-03 00:28:26,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 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 00:28:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-03 00:28:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 00:28:26,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:26,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:26,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-03 00:28:26,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:26,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:26,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash 373379470, now seen corresponding path program 1 times [2024-11-03 00:28:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506512295] [2024-11-03 00:28:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:26,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:26,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:26,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-03 00:28:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:26,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 00:28:26,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:26,953 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 00:28:26,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:26,979 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 00:28:26,980 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506512295] [2024-11-03 00:28:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1506512295] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:26,980 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 00:28:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123470634] [2024-11-03 00:28:26,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:26,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 00:28:26,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 00:28:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 00:28:26,984 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 00:28:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:27,004 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-03 00:28:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:27,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-03 00:28:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:27,006 INFO L225 Difference]: With dead ends: 62 [2024-11-03 00:28:27,006 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:27,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 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 00:28:27,008 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 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 00:28:27,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2024-11-03 00:28:27,025 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 27 [2024-11-03 00:28:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:27,026 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2024-11-03 00:28:27,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 00:28:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2024-11-03 00:28:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 00:28:27,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:27,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:27,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:27,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:27,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash 373319888, now seen corresponding path program 1 times [2024-11-03 00:28:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:27,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003160237] [2024-11-03 00:28:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:27,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:27,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:27,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-03 00:28:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:27,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:28:27,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:27,325 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 00:28:27,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:27,333 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 00:28:27,333 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003160237] [2024-11-03 00:28:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1003160237] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:27,334 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 00:28:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562512093] [2024-11-03 00:28:27,334 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:27,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 00:28:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 00:28:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 00:28:27,336 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 00:28:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:27,367 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-11-03 00:28:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 00:28:27,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 27 [2024-11-03 00:28:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:27,368 INFO L225 Difference]: With dead ends: 63 [2024-11-03 00:28:27,368 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:27,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 00:28:27,369 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 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 00:28:27,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2024-11-03 00:28:27,376 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 27 [2024-11-03 00:28:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:27,376 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2024-11-03 00:28:27,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 00:28:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2024-11-03 00:28:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 00:28:27,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:27,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:27,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:27,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:27,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash 489413935, now seen corresponding path program 1 times [2024-11-03 00:28:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:27,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413402237] [2024-11-03 00:28:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:27,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:27,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:27,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-03 00:28:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:27,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:27,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:27,700 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 00:28:27,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:27,721 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 00:28:27,721 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:27,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413402237] [2024-11-03 00:28:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1413402237] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:27,722 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:27,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112752012] [2024-11-03 00:28:27,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:27,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:27,723 INFO L87 Difference]: Start difference. First operand 58 states and 76 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, (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 00:28:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:27,783 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-03 00:28:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:27,783 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, (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 30 [2024-11-03 00:28:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:27,785 INFO L225 Difference]: With dead ends: 73 [2024-11-03 00:28:27,785 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:27,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 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 00:28:27,786 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:27,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2024-11-03 00:28:27,813 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 30 [2024-11-03 00:28:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:27,814 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2024-11-03 00:28:27,814 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, (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 00:28:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2024-11-03 00:28:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 00:28:27,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:27,815 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:27,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-03 00:28:28,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1216513705, now seen corresponding path program 1 times [2024-11-03 00:28:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:28,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628901081] [2024-11-03 00:28:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:28,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:28,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:28,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-03 00:28:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:28,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:28,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:28,120 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 00:28:28,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:28,131 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 00:28:28,131 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628901081] [2024-11-03 00:28:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628901081] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:28,132 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:28,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:28,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064021092] [2024-11-03 00:28:28,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:28,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:28,133 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 00:28:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:28,164 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2024-11-03 00:28:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:28,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-03 00:28:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:28,165 INFO L225 Difference]: With dead ends: 81 [2024-11-03 00:28:28,165 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:28,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 00:28:28,167 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:28,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-03 00:28:28,172 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 36 [2024-11-03 00:28:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:28,172 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-03 00:28:28,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 00:28:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-03 00:28:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-03 00:28:28,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:28,173 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:28,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:28,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:28,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash -483978296, now seen corresponding path program 1 times [2024-11-03 00:28:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877128112] [2024-11-03 00:28:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:28,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:28,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-03 00:28:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:28,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:28,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 00:28:28,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 00:28:28,492 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:28,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877128112] [2024-11-03 00:28:28,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1877128112] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:28,492 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006076828] [2024-11-03 00:28:28,493 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:28,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:28,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:28,494 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 00:28:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:28,518 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2024-11-03 00:28:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-03 00:28:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:28,519 INFO L225 Difference]: With dead ends: 85 [2024-11-03 00:28:28,520 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:28,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 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 00:28:28,521 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:28,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-03 00:28:28,531 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 42 [2024-11-03 00:28:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:28,531 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-03 00:28:28,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 00:28:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-03 00:28:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 00:28:28,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:28,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:28,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-03 00:28:28,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,738 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:28,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash 122397324, now seen corresponding path program 1 times [2024-11-03 00:28:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:28,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382955074] [2024-11-03 00:28:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:28,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:28,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:28,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-03 00:28:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:28,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:28,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 00:28:28,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 00:28:28,845 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382955074] [2024-11-03 00:28:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [382955074] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:28,846 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589811234] [2024-11-03 00:28:28,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:28,849 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 00:28:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:28,873 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-03 00:28:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-03 00:28:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:28,874 INFO L225 Difference]: With dead ends: 89 [2024-11-03 00:28:28,875 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:28,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 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 00:28:28,875 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:28,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:28,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:28,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-11-03 00:28:28,882 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 48 [2024-11-03 00:28:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:28,884 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-11-03 00:28:28,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 00:28:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-11-03 00:28:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 00:28:28,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:28,886 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:28,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:29,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,094 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:29,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash 768951279, now seen corresponding path program 1 times [2024-11-03 00:28:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367773308] [2024-11-03 00:28:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:29,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:29,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-03 00:28:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:29,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:29,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 00:28:29,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 00:28:29,206 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:29,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367773308] [2024-11-03 00:28:29,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367773308] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:29,206 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334223288] [2024-11-03 00:28:29,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:29,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:29,207 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-03 00:28:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:29,223 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2024-11-03 00:28:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2024-11-03 00:28:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:29,224 INFO L225 Difference]: With dead ends: 99 [2024-11-03 00:28:29,224 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:29,225 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 00:28:29,225 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:29,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2024-11-03 00:28:29,230 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 54 [2024-11-03 00:28:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:29,230 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2024-11-03 00:28:29,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-03 00:28:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2024-11-03 00:28:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-03 00:28:29,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:29,231 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:29,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-03 00:28:29,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,432 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:29,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2055983107, now seen corresponding path program 1 times [2024-11-03 00:28:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:29,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204866772] [2024-11-03 00:28:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:29,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:29,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:29,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-03 00:28:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:29,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:29,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:29,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:29,604 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204866772] [2024-11-03 00:28:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1204866772] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:29,604 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:29,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934954400] [2024-11-03 00:28:29,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:29,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:29,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:29,607 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-03 00:28:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:29,639 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2024-11-03 00:28:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2024-11-03 00:28:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:29,640 INFO L225 Difference]: With dead ends: 103 [2024-11-03 00:28:29,640 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:29,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 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 00:28:29,641 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:29,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-03 00:28:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 00:28:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-11-03 00:28:29,655 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 60 [2024-11-03 00:28:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:29,656 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-11-03 00:28:29,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-03 00:28:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-11-03 00:28:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-03 00:28:29,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:29,658 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:29,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-03 00:28:29,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,860 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:29,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1824557136, now seen corresponding path program 1 times [2024-11-03 00:28:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:29,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566605116] [2024-11-03 00:28:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:29,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:29,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:29,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-03 00:28:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:29,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:29,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 00:28:29,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-03 00:28:30,014 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566605116] [2024-11-03 00:28:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1566605116] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:30,015 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557866954] [2024-11-03 00:28:30,015 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:30,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:30,016 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-03 00:28:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:30,042 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2024-11-03 00:28:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2024-11-03 00:28:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:30,043 INFO L225 Difference]: With dead ends: 107 [2024-11-03 00:28:30,043 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 00:28:30,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 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 00:28:30,044 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:30,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 00:28:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-03 00:28:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-03 00:28:30,049 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 66 [2024-11-03 00:28:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:30,050 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-03 00:28:30,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-03 00:28:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-03 00:28:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 00:28:30,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:30,051 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:30,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:30,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:30,252 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:30,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 761216169, now seen corresponding path program 1 times [2024-11-03 00:28:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:30,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515324498] [2024-11-03 00:28:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:30,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:30,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-03 00:28:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:30,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:28:30,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-03 00:28:30,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-03 00:28:30,418 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515324498] [2024-11-03 00:28:30,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515324498] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:30,418 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 00:28:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118850027] [2024-11-03 00:28:30,419 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:30,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:30,420 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:30,448 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2024-11-03 00:28:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:30,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2024-11-03 00:28:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:30,449 INFO L225 Difference]: With dead ends: 70 [2024-11-03 00:28:30,449 INFO L226 Difference]: Without dead ends: 63 [2024-11-03 00:28:30,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 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 00:28:30,450 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:30,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 118 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-03 00:28:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-03 00:28:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-03 00:28:30,455 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 72 [2024-11-03 00:28:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:30,456 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-03 00:28:30,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-03 00:28:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 00:28:30,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:30,457 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:30,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:30,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:30,658 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:30,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1352872087, now seen corresponding path program 1 times [2024-11-03 00:28:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516024479] [2024-11-03 00:28:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:30,660 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:30,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-03 00:28:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:30,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:28:30,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-03 00:28:30,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-03 00:28:30,846 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516024479] [2024-11-03 00:28:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1516024479] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:30,846 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274925244] [2024-11-03 00:28:30,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:30,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:30,848 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:30,901 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-11-03 00:28:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-11-03 00:28:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:30,906 INFO L225 Difference]: With dead ends: 67 [2024-11-03 00:28:30,906 INFO L226 Difference]: Without dead ends: 61 [2024-11-03 00:28:30,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 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 00:28:30,907 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 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 00:28:30,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-03 00:28:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-03 00:28:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-03 00:28:30,916 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 73 [2024-11-03 00:28:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:30,917 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-03 00:28:30,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-03 00:28:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-03 00:28:30,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:30,921 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:30,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:31,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,122 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:31,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1231189799, now seen corresponding path program 1 times [2024-11-03 00:28:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282742826] [2024-11-03 00:28:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:31,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:31,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:31,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-03 00:28:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:31,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:31,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-03 00:28:31,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-03 00:28:31,326 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282742826] [2024-11-03 00:28:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [282742826] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:31,326 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 00:28:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977152206] [2024-11-03 00:28:31,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:31,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 00:28:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 00:28:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 00:28:31,328 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:31,404 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2024-11-03 00:28:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 00:28:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2024-11-03 00:28:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:31,405 INFO L225 Difference]: With dead ends: 82 [2024-11-03 00:28:31,406 INFO L226 Difference]: Without dead ends: 66 [2024-11-03 00:28:31,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 00:28:31,407 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 25 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:31,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 221 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-03 00:28:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-03 00:28:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-03 00:28:31,411 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 80 [2024-11-03 00:28:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:31,412 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-03 00:28:31,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-03 00:28:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-03 00:28:31,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:31,413 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:31,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:31,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,614 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:31,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -710473733, now seen corresponding path program 1 times [2024-11-03 00:28:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445247615] [2024-11-03 00:28:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:31,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:31,617 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:31,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-03 00:28:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:31,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 00:28:31,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-03 00:28:31,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-03 00:28:31,981 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445247615] [2024-11-03 00:28:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1445247615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:31,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:31,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-03 00:28:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719971251] [2024-11-03 00:28:31,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:31,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 00:28:31,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:31,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 00:28:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-03 00:28:31,983 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:32,299 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2024-11-03 00:28:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 00:28:32,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 89 [2024-11-03 00:28:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:32,301 INFO L225 Difference]: With dead ends: 115 [2024-11-03 00:28:32,301 INFO L226 Difference]: Without dead ends: 101 [2024-11-03 00:28:32,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2024-11-03 00:28:32,302 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 74 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:32,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 346 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-03 00:28:32,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2024-11-03 00:28:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2024-11-03 00:28:32,310 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 89 [2024-11-03 00:28:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:32,310 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2024-11-03 00:28:32,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2024-11-03 00:28:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-03 00:28:32,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:32,312 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:32,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-03 00:28:32,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:32,517 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:32,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 390316313, now seen corresponding path program 2 times [2024-11-03 00:28:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:32,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000302425] [2024-11-03 00:28:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:32,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:32,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-03 00:28:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:32,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 00:28:32,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-03 00:28:32,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-03 00:28:32,818 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000302425] [2024-11-03 00:28:32,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2000302425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:32,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-03 00:28:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081043649] [2024-11-03 00:28:32,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:32,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 00:28:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 00:28:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-03 00:28:32,820 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:33,086 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2024-11-03 00:28:33,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 00:28:33,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2024-11-03 00:28:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:33,088 INFO L225 Difference]: With dead ends: 154 [2024-11-03 00:28:33,088 INFO L226 Difference]: Without dead ends: 108 [2024-11-03 00:28:33,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2024-11-03 00:28:33,089 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 50 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:33,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 453 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-03 00:28:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-03 00:28:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 96 states have (on average 1.09375) internal successors, (105), 96 states have internal predecessors, (105), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-03 00:28:33,096 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 98 [2024-11-03 00:28:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:33,096 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-03 00:28:33,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-03 00:28:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-03 00:28:33,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:33,098 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:33,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-03 00:28:33,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:33,299 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:33,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 478719641, now seen corresponding path program 3 times [2024-11-03 00:28:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:33,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035655710] [2024-11-03 00:28:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:33,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:33,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:33,302 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:33,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-03 00:28:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:33,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 00:28:33,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 85 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-03 00:28:33,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 85 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-03 00:28:33,821 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:33,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035655710] [2024-11-03 00:28:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1035655710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:33,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2024-11-03 00:28:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292132602] [2024-11-03 00:28:33,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:33,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 00:28:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 00:28:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-03 00:28:33,824 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:34,322 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2024-11-03 00:28:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 00:28:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 110 [2024-11-03 00:28:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:34,324 INFO L225 Difference]: With dead ends: 178 [2024-11-03 00:28:34,324 INFO L226 Difference]: Without dead ends: 132 [2024-11-03 00:28:34,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 00:28:34,325 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 103 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:34,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 590 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-03 00:28:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2024-11-03 00:28:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.0833333333333333) internal successors, (130), 120 states have internal predecessors, (130), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2024-11-03 00:28:34,363 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 110 [2024-11-03 00:28:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:34,363 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2024-11-03 00:28:34,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2024-11-03 00:28:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-03 00:28:34,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:34,365 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:34,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-03 00:28:34,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:34,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:34,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1238030549, now seen corresponding path program 4 times [2024-11-03 00:28:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736601848] [2024-11-03 00:28:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:34,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:34,572 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:34,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-03 00:28:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:34,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:28:34,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-03 00:28:34,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-03 00:28:34,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736601848] [2024-11-03 00:28:34,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [736601848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:34,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:34,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 00:28:34,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195076059] [2024-11-03 00:28:34,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:34,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 00:28:34,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:34,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 00:28:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 00:28:34,951 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:35,053 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2024-11-03 00:28:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 00:28:35,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 113 [2024-11-03 00:28:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:35,055 INFO L225 Difference]: With dead ends: 152 [2024-11-03 00:28:35,056 INFO L226 Difference]: Without dead ends: 145 [2024-11-03 00:28:35,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 00:28:35,057 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 30 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:35,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 256 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-03 00:28:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-03 00:28:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 134 states have (on average 1.0746268656716418) internal successors, (144), 134 states have internal predecessors, (144), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2024-11-03 00:28:35,067 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 113 [2024-11-03 00:28:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:35,068 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2024-11-03 00:28:35,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2024-11-03 00:28:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-03 00:28:35,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:35,070 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:35,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-03 00:28:35,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:35,272 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:35,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -738158821, now seen corresponding path program 5 times [2024-11-03 00:28:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338134356] [2024-11-03 00:28:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:35,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:35,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:35,275 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:35,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-03 00:28:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:35,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:28:35,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 244 proven. 189 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-03 00:28:35,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 244 proven. 189 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-03 00:28:35,931 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338134356] [2024-11-03 00:28:35,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [338134356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:35,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:35,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-11-03 00:28:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768553849] [2024-11-03 00:28:35,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:35,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 00:28:35,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 00:28:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-03 00:28:35,933 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:36,598 INFO L93 Difference]: Finished difference Result 197 states and 221 transitions. [2024-11-03 00:28:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 00:28:36,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 147 [2024-11-03 00:28:36,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:36,600 INFO L225 Difference]: With dead ends: 197 [2024-11-03 00:28:36,600 INFO L226 Difference]: Without dead ends: 163 [2024-11-03 00:28:36,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=304, Invalid=886, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 00:28:36,601 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 97 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:36,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 494 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 00:28:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-03 00:28:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-03 00:28:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 152 states have (on average 1.0723684210526316) internal successors, (163), 152 states have internal predecessors, (163), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 179 transitions. [2024-11-03 00:28:36,610 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 179 transitions. Word has length 147 [2024-11-03 00:28:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:36,611 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 179 transitions. [2024-11-03 00:28:36,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 179 transitions. [2024-11-03 00:28:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-03 00:28:36,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:36,613 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:36,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:36,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:36,817 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:36,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash 751127403, now seen corresponding path program 6 times [2024-11-03 00:28:36,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572512321] [2024-11-03 00:28:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:36,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:36,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:36,822 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:36,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-03 00:28:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:36,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 00:28:36,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 198 proven. 480 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-03 00:28:37,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 198 proven. 480 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-03 00:28:37,660 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:37,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572512321] [2024-11-03 00:28:37,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572512321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:37,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2024-11-03 00:28:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985275705] [2024-11-03 00:28:37,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:37,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 00:28:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 00:28:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-03 00:28:37,662 INFO L87 Difference]: Start difference. First operand 163 states and 179 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:39,338 INFO L93 Difference]: Finished difference Result 255 states and 293 transitions. [2024-11-03 00:28:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-03 00:28:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 159 [2024-11-03 00:28:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:39,340 INFO L225 Difference]: With dead ends: 255 [2024-11-03 00:28:39,340 INFO L226 Difference]: Without dead ends: 225 [2024-11-03 00:28:39,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=686, Invalid=3096, Unknown=0, NotChecked=0, Total=3782 [2024-11-03 00:28:39,343 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 167 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:39,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 567 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 00:28:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-03 00:28:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2024-11-03 00:28:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.1057692307692308) internal successors, (230), 208 states have internal predecessors, (230), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 246 transitions. [2024-11-03 00:28:39,359 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 246 transitions. Word has length 159 [2024-11-03 00:28:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:39,360 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 246 transitions. [2024-11-03 00:28:39,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 246 transitions. [2024-11-03 00:28:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-03 00:28:39,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:39,362 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:39,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:39,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:39,563 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:39,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash 90218729, now seen corresponding path program 7 times [2024-11-03 00:28:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572257056] [2024-11-03 00:28:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:39,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:39,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:39,568 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:39,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-03 00:28:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:39,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 00:28:39,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 16 proven. 725 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-03 00:28:39,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 16 proven. 725 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-03 00:28:40,437 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:40,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572257056] [2024-11-03 00:28:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572257056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:40,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:40,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2024-11-03 00:28:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617747335] [2024-11-03 00:28:40,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:40,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 00:28:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 00:28:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-11-03 00:28:40,439 INFO L87 Difference]: Start difference. First operand 219 states and 246 transitions. Second operand has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 19 states have internal predecessors, (121), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:41,403 INFO L93 Difference]: Finished difference Result 323 states and 374 transitions. [2024-11-03 00:28:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-03 00:28:41,404 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 19 states have internal predecessors, (121), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 162 [2024-11-03 00:28:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:41,406 INFO L225 Difference]: With dead ends: 323 [2024-11-03 00:28:41,406 INFO L226 Difference]: Without dead ends: 265 [2024-11-03 00:28:41,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=514, Invalid=1936, Unknown=0, NotChecked=0, Total=2450 [2024-11-03 00:28:41,407 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 116 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:41,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 662 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 00:28:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-03 00:28:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2024-11-03 00:28:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.1088709677419355) internal successors, (275), 248 states have internal predecessors, (275), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2024-11-03 00:28:41,422 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 162 [2024-11-03 00:28:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:41,423 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2024-11-03 00:28:41,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 19 states have internal predecessors, (121), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2024-11-03 00:28:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-03 00:28:41,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:41,426 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:41,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:41,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:41,627 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:41,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1765533163, now seen corresponding path program 8 times [2024-11-03 00:28:41,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771224922] [2024-11-03 00:28:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:41,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:41,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:41,629 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:41,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-03 00:28:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:41,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:28:41,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 562 proven. 119 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-11-03 00:28:41,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 562 proven. 119 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-11-03 00:28:42,000 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:42,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771224922] [2024-11-03 00:28:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1771224922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:42,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 00:28:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782255982] [2024-11-03 00:28:42,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:42,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 00:28:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 00:28:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-03 00:28:42,002 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:42,415 INFO L93 Difference]: Finished difference Result 424 states and 479 transitions. [2024-11-03 00:28:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 00:28:42,416 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 171 [2024-11-03 00:28:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:42,417 INFO L225 Difference]: With dead ends: 424 [2024-11-03 00:28:42,417 INFO L226 Difference]: Without dead ends: 266 [2024-11-03 00:28:42,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2024-11-03 00:28:42,419 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:42,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 703 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 00:28:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-03 00:28:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2024-11-03 00:28:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.1062992125984252) internal successors, (281), 254 states have internal predecessors, (281), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 297 transitions. [2024-11-03 00:28:42,464 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 297 transitions. Word has length 171 [2024-11-03 00:28:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:42,464 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 297 transitions. [2024-11-03 00:28:42,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 297 transitions. [2024-11-03 00:28:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-03 00:28:42,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:42,466 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:42,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-03 00:28:42,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:42,667 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:42,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1416794837, now seen corresponding path program 9 times [2024-11-03 00:28:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:42,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649518163] [2024-11-03 00:28:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:42,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:42,669 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:42,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-03 00:28:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:42,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:28:43,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1086 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-03 00:28:43,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1086 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-03 00:28:43,397 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649518163] [2024-11-03 00:28:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1649518163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:43,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:43,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 00:28:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832600926] [2024-11-03 00:28:43,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:43,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 00:28:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 00:28:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-03 00:28:43,399 INFO L87 Difference]: Start difference. First operand 265 states and 297 transitions. Second operand has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 states have internal predecessors, (124), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:43,512 INFO L93 Difference]: Finished difference Result 272 states and 303 transitions. [2024-11-03 00:28:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 00:28:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 states have internal predecessors, (124), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 177 [2024-11-03 00:28:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:43,514 INFO L225 Difference]: With dead ends: 272 [2024-11-03 00:28:43,514 INFO L226 Difference]: Without dead ends: 265 [2024-11-03 00:28:43,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-03 00:28:43,515 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 17 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:43,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 632 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-03 00:28:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-03 00:28:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.1023622047244095) internal successors, (280), 254 states have internal predecessors, (280), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 00:28:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 296 transitions. [2024-11-03 00:28:43,528 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 296 transitions. Word has length 177 [2024-11-03 00:28:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:43,529 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 296 transitions. [2024-11-03 00:28:43,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 16 states have internal predecessors, (124), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 00:28:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 296 transitions. [2024-11-03 00:28:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 00:28:43,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:43,530 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:43,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:43,731 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:43,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash 773529361, now seen corresponding path program 10 times [2024-11-03 00:28:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:43,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030202698] [2024-11-03 00:28:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:43,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:43,733 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-03 00:28:43,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-03 00:28:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 00:28:44,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 00:28:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 00:28:44,315 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 00:28:44,315 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 00:28:44,316 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 00:28:44,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:44,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:44,520 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:44,571 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 00:28:44,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 12:28:44 BoogieIcfgContainer [2024-11-03 00:28:44,573 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 00:28:44,574 INFO L158 Benchmark]: Toolchain (without parser) took 19233.02ms. Allocated memory was 329.3MB in the beginning and 401.6MB in the end (delta: 72.4MB). Free memory was 282.4MB in the beginning and 201.4MB in the end (delta: 80.9MB). Peak memory consumption was 154.8MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,574 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 219.2MB. Free memory is still 165.7MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 00:28:44,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.61ms. Allocated memory is still 329.3MB. Free memory was 282.4MB in the beginning and 268.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.60ms. Allocated memory is still 329.3MB. Free memory was 268.2MB in the beginning and 266.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,574 INFO L158 Benchmark]: Boogie Preprocessor took 36.49ms. Allocated memory is still 329.3MB. Free memory was 266.1MB in the beginning and 263.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,574 INFO L158 Benchmark]: RCFGBuilder took 476.30ms. Allocated memory is still 329.3MB. Free memory was 263.5MB in the beginning and 242.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,575 INFO L158 Benchmark]: TraceAbstraction took 18444.63ms. Allocated memory was 329.3MB in the beginning and 401.6MB in the end (delta: 72.4MB). Free memory was 242.0MB in the beginning and 201.4MB in the end (delta: 40.6MB). Peak memory consumption was 114.0MB. Max. memory is 8.0GB. [2024-11-03 00:28:44,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 219.2MB. Free memory is still 165.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.61ms. Allocated memory is still 329.3MB. Free memory was 282.4MB in the beginning and 268.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.60ms. Allocated memory is still 329.3MB. Free memory was 268.2MB in the beginning and 266.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.49ms. Allocated memory is still 329.3MB. Free memory was 266.1MB in the beginning and 263.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 476.30ms. Allocated memory is still 329.3MB. Free memory was 263.5MB in the beginning and 242.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 18444.63ms. Allocated memory was 329.3MB in the beginning and 401.6MB in the end (delta: 72.4MB). Free memory was 242.0MB in the beginning and 201.4MB in the end (delta: 40.6MB). Peak memory consumption was 114.0MB. 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: [L58] int s, e, n, d, m, o, r, y; [L59] s = __VERIFIER_nondet_int() [L60] e = __VERIFIER_nondet_int() [L61] n = __VERIFIER_nondet_int() [L62] d = __VERIFIER_nondet_int() [L63] m = __VERIFIER_nondet_int() [L64] o = __VERIFIER_nondet_int() [L65] r = __VERIFIER_nondet_int() [L66] y = __VERIFIER_nondet_int() [L67] CALL, EXPR solve(s, e, n, d, m, o, r, y) [L46] CALL, EXPR check_domain_1(S) VAL [\old(x)=9] [L32] COND TRUE x >= 1 && x <= 9 [L32] return 1; VAL [\old(x)=9, \result=1] [L46] RET, EXPR check_domain_1(S) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] EXPR check_domain_1(S) && check_domain_0(E) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] CALL, EXPR check_domain_0(E) VAL [\old(x)=5] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=5, \result=1] [L46] RET, EXPR check_domain_0(E) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] EXPR check_domain_1(S) && check_domain_0(E) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] CALL, EXPR check_domain_0(N) VAL [\old(x)=6] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=6, \result=1] [L46] RET, EXPR check_domain_0(N) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L47] CALL, EXPR check_domain_0(D) VAL [\old(x)=7] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=7, \result=1] [L47] RET, EXPR check_domain_0(D) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L47] CALL, EXPR check_domain_1(M) VAL [\old(x)=1] [L32] COND TRUE x >= 1 && x <= 9 [L32] return 1; VAL [\old(x)=1, \result=1] [L47] RET, EXPR check_domain_1(M) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L47] CALL, EXPR check_domain_0(O) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=0, \result=1] [L47] RET, EXPR check_domain_0(O) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L47] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L48] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L48] CALL, EXPR check_domain_0(R) VAL [\old(x)=8] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=8, \result=1] [L48] RET, EXPR check_domain_0(R) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L48] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L48] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L48] CALL, EXPR check_domain_0(Y) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 9 [L28] return 1; VAL [\old(x)=2, \result=1] [L48] RET, EXPR check_domain_0(Y) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L48] EXPR check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L51] check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) && (1000 * S + 100 * E + 10 * N + D + 1000 * M + 100 * O + 10 * R + E == 10000 * M + 1000 * O + 100 * N + 10 * E + Y) && check_diff(S, E, N, D, M, O, R, Y) VAL [D=7, E=5, M=1, N=6, O=0, R=8, S=9, Y=2] [L46-L51] check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) && (1000 * S + 100 * E + 10 * N + D + 1000 * M + 100 * O + 10 * R + E == 10000 * M + 1000 * O + 100 * N + 10 * E + Y) && check_diff(S, E, N, D, M, O, R, Y) [L51] CALL, EXPR check_diff(S, E, N, D, M, O, R, Y) [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L38] int i = 0; VAL [d={5:0}, i=0] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=0, j=1] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=2] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=3] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=4] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=5] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=0, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=0] [L38] i++ VAL [d={5:0}, i=1] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=1, j=2] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=3] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=4] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=5] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=1, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=1] [L38] i++ VAL [d={5:0}, i=2] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=2, j=3] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=2, j=4] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=2, j=5] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=2, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=2, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=2, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=2] [L38] i++ VAL [d={5:0}, i=3] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=3, j=4] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=3, j=5] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=3, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=3, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=3, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=3] [L38] i++ VAL [d={5:0}, i=4] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=4, j=5] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=4, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=4, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=4, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=4] [L38] i++ VAL [d={5:0}, i=5] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=5, j=6] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=5, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=5, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=5] [L38] i++ VAL [d={5:0}, i=6] [L38] COND TRUE i < 7 [L39] int j = i + 1; VAL [d={5:0}, i=6, j=7] [L39] COND TRUE j < 8 [L40] EXPR d[i] [L40] EXPR d[j] [L40] COND FALSE !(d[i] == d[j]) [L39] j++ VAL [d={5:0}, i=6, j=8] [L39] COND FALSE !(j < 8) VAL [d={5:0}, i=6] [L38] i++ VAL [d={5:0}, i=7] [L38] COND FALSE !(i < 7) VAL [d={5:0}] [L42] return 1; [L37] int d[8] = {S, E, N, D, M, O, R, Y}; [L42] return 1; VAL [\result=1] [L51] RET, EXPR check_diff(S, E, N, D, M, O, R, Y) [L46-L51] check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) && (1000 * S + 100 * E + 10 * N + D + 1000 * M + 100 * O + 10 * R + E == 10000 * M + 1000 * O + 100 * N + 10 * E + Y) && check_diff(S, E, N, D, M, O, R, Y) [L46-L51] COND TRUE check_domain_1(S) && check_domain_0(E) && check_domain_0(N) && check_domain_0(D) && check_domain_1(M) && check_domain_0(O) && check_domain_0(R) && check_domain_0(Y) && (1000 * S + 100 * E + 10 * N + D + 1000 * M + 100 * O + 10 * R + E == 10000 * M + 1000 * O + 100 * N + 10 * E + Y) && check_diff(S, E, N, D, M, O, R, Y) [L52] return 1; VAL [\result=1] [L67] RET, EXPR solve(s, e, n, d, m, o, r, y) [L67] CALL __VERIFIER_assert(!solve(s, e, n, d, m, o, r, y)) [L18] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 23, TraceHistogramMax: 28, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 767 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 767 mSDsluCounter, 7249 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5764 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1637 IncrementalHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 1485 mSDtfsCounter, 1637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3843 GetRequests, 3545 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=21, InterpolantAutomatonStates: 265, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 27 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2052 NumberOfCodeBlocks, 2052 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 3692 ConstructedInterpolants, 0 QuantifiedInterpolants, 7995 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4017 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 44 InterpolantComputations, 26 PerfectInterpolantSequences, 6468/12004 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 00:28:44,609 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...