/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/hardness-nfm22/hardness_operatoramount_amount100_file-31.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:34:43,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:34:43,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 21:34:43,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:34:43,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:34:43,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:34:43,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:34:43,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:34:43,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:34:43,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:34:43,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:34:43,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:34:43,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:34:43,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:34:43,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:34:43,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:34:43,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:34:43,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:34:43,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:34:43,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:34:43,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:34:43,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:34:43,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:34:43,109 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:34:43,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:34:43,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:34:43,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:34:43,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:34:43,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:34:43,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:34:43,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:34:43,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:34:43,111 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:34:43,111 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:34:43,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:34:43,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:34:43,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:34:43,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:34:43,113 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:43,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:34:43,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:34:43,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:34:43,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:34:43,332 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:34:43,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-31.i [2024-11-02 21:34:44,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:34:44,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:34:44,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-31.i [2024-11-02 21:34:44,796 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b05f29b/7e93e630068d4f96afef8c5fca1cb614/FLAG205ce8da5 [2024-11-02 21:34:45,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b05f29b/7e93e630068d4f96afef8c5fca1cb614 [2024-11-02 21:34:45,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:34:45,184 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:34:45,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:34:45,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:34:45,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:34:45,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d7c029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45, skipping insertion in model container [2024-11-02 21:34:45,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:34:45,360 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-31.i[916,929] [2024-11-02 21:34:45,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:34:45,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:34:45,440 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-31.i[916,929] [2024-11-02 21:34:45,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:34:45,490 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:34:45,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45 WrapperNode [2024-11-02 21:34:45,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:34:45,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:34:45,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:34:45,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:34:45,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,535 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 201 [2024-11-02 21:34:45,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:34:45,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:34:45,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:34:45,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:34:45,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,566 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 21:34:45,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:34:45,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:34:45,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:34:45,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:34:45,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (1/1) ... [2024-11-02 21:34:45,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:34:45,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:45,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-02 21:34:45,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-02 21:34:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:34:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:34:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:34:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:34:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:34:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:34:45,740 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:34:45,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:34:50,971 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-02 21:34:50,971 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:34:50,982 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:34:50,983 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:34:50,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:34:50 BoogieIcfgContainer [2024-11-02 21:34:50,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:34:50,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:34:50,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:34:50,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:34:50,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:34:45" (1/3) ... [2024-11-02 21:34:50,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f152c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:34:50, skipping insertion in model container [2024-11-02 21:34:50,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:45" (2/3) ... [2024-11-02 21:34:50,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f152c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:34:50, skipping insertion in model container [2024-11-02 21:34:50,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:34:50" (3/3) ... [2024-11-02 21:34:50,989 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-31.i [2024-11-02 21:34:51,002 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:34:51,003 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:34:51,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:34:51,074 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;@3e57d4bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:34:51,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:34:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 57 states have internal predecessors, (81), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 21:34:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-02 21:34:51,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:34:51,090 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:34:51,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:34:51,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:34:51,095 INFO L85 PathProgramCache]: Analyzing trace with hash -306530566, now seen corresponding path program 1 times [2024-11-02 21:34:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:34:51,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236701200] [2024-11-02 21:34:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:34:51,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:51,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:34:51,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 21:34:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:34:51,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:34:51,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:34:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-02 21:34:51,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:34:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-02 21:34:52,053 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:34:52,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236701200] [2024-11-02 21:34:52,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [236701200] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:34:52,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:34:52,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:34:52,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238098859] [2024-11-02 21:34:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:34:52,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:34:52,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:34:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:34:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:34:52,078 INFO L87 Difference]: Start difference. First operand has 85 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 57 states have internal predecessors, (81), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 21:34:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:34:52,109 INFO L93 Difference]: Finished difference Result 163 states and 286 transitions. [2024-11-02 21:34:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:34:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2024-11-02 21:34:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:34:52,118 INFO L225 Difference]: With dead ends: 163 [2024-11-02 21:34:52,118 INFO L226 Difference]: Without dead ends: 81 [2024-11-02 21:34:52,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:34:52,123 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:34:52,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:34:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-02 21:34:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-02 21:34:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 21:34:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2024-11-02 21:34:52,163 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 126 transitions. Word has length 169 [2024-11-02 21:34:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:34:52,164 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 126 transitions. [2024-11-02 21:34:52,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 21:34:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 126 transitions. [2024-11-02 21:34:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-02 21:34:52,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:34:52,169 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:34:52,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 21:34:52,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:52,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:34:52,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:34:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1336568910, now seen corresponding path program 1 times [2024-11-02 21:34:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:34:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514515016] [2024-11-02 21:34:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:34:52,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:52,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:34:52,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 21:34:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:34:52,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:34:52,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:34:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:34:54,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:34:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:34:55,192 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:34:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514515016] [2024-11-02 21:34:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1514515016] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:34:55,192 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:34:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-02 21:34:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122816307] [2024-11-02 21:34:55,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:34:55,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:34:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:34:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:34:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:34:55,199 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-02 21:35:00,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:03,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:07,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:09,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:09,428 INFO L93 Difference]: Finished difference Result 277 states and 430 transitions. [2024-11-02 21:35:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 21:35:09,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 169 [2024-11-02 21:35:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:09,474 INFO L225 Difference]: With dead ends: 277 [2024-11-02 21:35:09,475 INFO L226 Difference]: Without dead ends: 199 [2024-11-02 21:35:09,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:35:09,476 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 130 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 64 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-02 21:35:09,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 385 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2024-11-02 21:35:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-02 21:35:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 150. [2024-11-02 21:35:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 95 states have internal predecessors, (126), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-02 21:35:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 230 transitions. [2024-11-02 21:35:09,506 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 230 transitions. Word has length 169 [2024-11-02 21:35:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:09,510 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 230 transitions. [2024-11-02 21:35:09,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-02 21:35:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 230 transitions. [2024-11-02 21:35:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-02 21:35:09,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:09,514 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:35:09,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 21:35:09,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:09,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:09,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1515830209, now seen corresponding path program 1 times [2024-11-02 21:35:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983834440] [2024-11-02 21:35:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:09,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:35:09,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 21:35:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:10,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 21:35:10,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 637 proven. 90 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-11-02 21:35:12,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-02 21:35:14,323 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983834440] [2024-11-02 21:35:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1983834440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:35:14,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:35:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2024-11-02 21:35:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607884953] [2024-11-02 21:35:14,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:35:14,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 21:35:14,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 21:35:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-02 21:35:14,329 INFO L87 Difference]: Start difference. First operand 150 states and 230 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-02 21:35:22,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:24,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:29,145 INFO L93 Difference]: Finished difference Result 520 states and 774 transitions. [2024-11-02 21:35:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-02 21:35:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 170 [2024-11-02 21:35:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:29,149 INFO L225 Difference]: With dead ends: 520 [2024-11-02 21:35:29,149 INFO L226 Difference]: Without dead ends: 373 [2024-11-02 21:35:29,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=338, Invalid=1068, Unknown=0, NotChecked=0, Total=1406 [2024-11-02 21:35:29,154 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 273 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:35:29,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 973 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 823 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2024-11-02 21:35:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-02 21:35:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 191. [2024-11-02 21:35:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 124 states have internal predecessors, (159), 61 states have call successors, (61), 6 states have call predecessors, (61), 6 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-02 21:35:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 281 transitions. [2024-11-02 21:35:29,186 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 281 transitions. Word has length 170 [2024-11-02 21:35:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:29,187 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 281 transitions. [2024-11-02 21:35:29,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-02 21:35:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 281 transitions. [2024-11-02 21:35:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-02 21:35:29,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:29,189 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:35:29,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 21:35:29,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:29,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1499273409, now seen corresponding path program 1 times [2024-11-02 21:35:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240039326] [2024-11-02 21:35:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:29,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:35:29,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 21:35:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:29,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:35:29,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:35:31,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:35:32,255 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240039326] [2024-11-02 21:35:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [240039326] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:35:32,255 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:35:32,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 5 [2024-11-02 21:35:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168083168] [2024-11-02 21:35:32,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:35:32,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 21:35:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 21:35:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:35:32,257 INFO L87 Difference]: Start difference. First operand 191 states and 281 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-02 21:35:36,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:37,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:42,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:46,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:46,843 INFO L93 Difference]: Finished difference Result 563 states and 820 transitions. [2024-11-02 21:35:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 21:35:46,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 170 [2024-11-02 21:35:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:46,847 INFO L225 Difference]: With dead ends: 563 [2024-11-02 21:35:46,847 INFO L226 Difference]: Without dead ends: 389 [2024-11-02 21:35:46,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:35:46,849 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 179 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-11-02 21:35:46,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 558 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 41 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2024-11-02 21:35:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-02 21:35:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 310. [2024-11-02 21:35:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 193 states have (on average 1.2487046632124352) internal successors, (241), 193 states have internal predecessors, (241), 104 states have call successors, (104), 12 states have call predecessors, (104), 12 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-02 21:35:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 449 transitions. [2024-11-02 21:35:46,895 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 449 transitions. Word has length 170 [2024-11-02 21:35:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:46,896 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 449 transitions. [2024-11-02 21:35:46,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-02 21:35:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 449 transitions. [2024-11-02 21:35:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-02 21:35:46,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:46,902 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:35:46,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 21:35:47,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:47,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:47,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 747396419, now seen corresponding path program 1 times [2024-11-02 21:35:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244014379] [2024-11-02 21:35:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:47,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:47,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:35:47,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 21:35:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:47,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:35:47,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:35:47,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:35:48,704 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244014379] [2024-11-02 21:35:48,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244014379] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:35:48,705 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:35:48,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-02 21:35:48,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430919932] [2024-11-02 21:35:48,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:35:48,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:35:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:48,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:35:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:35:48,706 INFO L87 Difference]: Start difference. First operand 310 states and 449 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-02 21:35:54,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:35:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:02,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:36:03,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:07,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:11,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:36:11,559 INFO L93 Difference]: Finished difference Result 617 states and 890 transitions. [2024-11-02 21:36:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 21:36:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2024-11-02 21:36:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:36:11,604 INFO L225 Difference]: With dead ends: 617 [2024-11-02 21:36:11,604 INFO L226 Difference]: Without dead ends: 366 [2024-11-02 21:36:11,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-02 21:36:11,605 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 74 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2024-11-02 21:36:11,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 640 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 3 Unknown, 0 Unchecked, 22.8s Time] [2024-11-02 21:36:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-02 21:36:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 325. [2024-11-02 21:36:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 208 states have (on average 1.2692307692307692) internal successors, (264), 208 states have internal predecessors, (264), 104 states have call successors, (104), 12 states have call predecessors, (104), 12 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-02 21:36:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 472 transitions. [2024-11-02 21:36:11,626 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 472 transitions. Word has length 171 [2024-11-02 21:36:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:36:11,627 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 472 transitions. [2024-11-02 21:36:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-02 21:36:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 472 transitions. [2024-11-02 21:36:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-02 21:36:11,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:36:11,628 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:36:11,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 21:36:11,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:36:11,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:36:11,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:36:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 804654721, now seen corresponding path program 1 times [2024-11-02 21:36:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:36:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182069486] [2024-11-02 21:36:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:36:11,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:36:11,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:36:11,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:36:11,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 21:36:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:36:12,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 21:36:12,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:36:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:36:14,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:36:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-02 21:36:15,225 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:36:15,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182069486] [2024-11-02 21:36:15,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1182069486] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:36:15,225 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:36:15,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2024-11-02 21:36:15,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515254052] [2024-11-02 21:36:15,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:36:15,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 21:36:15,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:36:15,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 21:36:15,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-02 21:36:15,226 INFO L87 Difference]: Start difference. First operand 325 states and 472 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-02 21:36:20,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:36:24,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:36:26,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []