/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_amount50_file-80.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:35:52,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:35:52,191 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:35:52,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:35:52,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:35:52,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:35:52,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:35:52,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:35:52,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:35:52,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:35:52,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:35:52,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:35:52,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:35:52,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:35:52,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:35:52,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:35:52,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:35:52,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:35:52,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:35:52,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:35:52,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:35:52,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:35:52,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:35:52,240 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:35:52,240 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:35:52,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:35:52,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:35:52,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:35:52,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:35:52,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:35:52,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:35:52,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:35:52,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:35:52,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:35:52,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:35:52,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:35:52,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:35:52,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:35:52,244 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:35:52,244 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:35:52,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:35:52,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:35:52,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:35:52,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:35:52,245 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:35:52,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:35:52,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:35:52,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:35:52,494 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:35:52,494 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:35:52,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-80.i [2024-11-02 22:35:53,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:35:54,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:35:54,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-80.i [2024-11-02 22:35:54,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69d06a02/f90657a7160549a29fef7e5acf58dd55/FLAG3d5a18433 [2024-11-02 22:35:54,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69d06a02/f90657a7160549a29fef7e5acf58dd55 [2024-11-02 22:35:54,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:35:54,144 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:35:54,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:35:54,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:35:54,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:35:54,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fd98cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54, skipping insertion in model container [2024-11-02 22:35:54,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:35:54,352 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_amount50_file-80.i[915,928] [2024-11-02 22:35:54,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:35:54,413 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:35:54,423 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_amount50_file-80.i[915,928] [2024-11-02 22:35:54,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:35:54,476 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:35:54,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54 WrapperNode [2024-11-02 22:35:54,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:35:54,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:35:54,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:35:54,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:35:54,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,519 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2024-11-02 22:35:54,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:35:54,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:35:54,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:35:54,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:35:54,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,554 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 22:35:54,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:35:54,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:35:54,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:35:54,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:35:54,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (1/1) ... [2024-11-02 22:35:54,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:35:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:35:54,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-02 22:35:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-02 22:35:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:35:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:35:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:35:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:35:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:35:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:35:54,752 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:35:54,754 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:36:16,133 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-02 22:36:16,133 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:36:16,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:36:16,153 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:36:16,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:16 BoogieIcfgContainer [2024-11-02 22:36:16,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:36:16,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:36:16,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:36:16,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:36:16,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:35:54" (1/3) ... [2024-11-02 22:36:16,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d664e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:16, skipping insertion in model container [2024-11-02 22:36:16,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:54" (2/3) ... [2024-11-02 22:36:16,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d664e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:16, skipping insertion in model container [2024-11-02 22:36:16,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:16" (3/3) ... [2024-11-02 22:36:16,165 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-80.i [2024-11-02 22:36:16,181 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:36:16,181 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:36:16,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:36:16,242 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;@4ecf0f74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:36:16,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:36:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-02 22:36:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 22:36:16,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:36:16,260 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:36:16,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:36:16,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:36:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 984032602, now seen corresponding path program 1 times [2024-11-02 22:36:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:36:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138200801] [2024-11-02 22:36:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:36:16,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:36:16,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:36:16,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:36:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:36:17,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:36:17,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:36:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:36:17,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:36:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:36:18,801 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:36:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138200801] [2024-11-02 22:36:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2138200801] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:36:18,802 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:36:18,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-02 22:36:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311515761] [2024-11-02 22:36:18,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:36:18,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 22:36:18,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:36:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 22:36:18,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:36:18,837 INFO L87 Difference]: Start difference. First operand has 61 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-02 22:36:23,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:36:27,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:36:31,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:36:35,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:36:39,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:43,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:36:47,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:36:47,867 INFO L93 Difference]: Finished difference Result 169 states and 299 transitions. [2024-11-02 22:36:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:36:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 125 [2024-11-02 22:36:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:36:47,998 INFO L225 Difference]: With dead ends: 169 [2024-11-02 22:36:47,999 INFO L226 Difference]: Without dead ends: 111 [2024-11-02 22:36:48,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 22:36:48,005 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 80 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2024-11-02 22:36:48,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 384 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 28.9s Time] [2024-11-02 22:36:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-02 22:36:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 59. [2024-11-02 22:36:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-02 22:36:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2024-11-02 22:36:48,074 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 125 [2024-11-02 22:36:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:36:48,077 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2024-11-02 22:36:48,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-02 22:36:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2024-11-02 22:36:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 22:36:48,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:36:48,080 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:36:48,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 22:36:48,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:48,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:36:48,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:36:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash 591005592, now seen corresponding path program 1 times [2024-11-02 22:36:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:36:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3000205] [2024-11-02 22:36:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:36:48,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:48,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:36:48,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:36:48,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:36:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:36:48,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:36:48,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:36:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:36:52,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:36:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:36:54,652 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:36:54,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3000205] [2024-11-02 22:36:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [3000205] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:36:54,652 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:36:54,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-02 22:36:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705637575] [2024-11-02 22:36:54,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:36:54,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:36:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:36:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:36:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:36:54,656 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-02 22:36:59,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:03,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:37:03,206 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2024-11-02 22:37:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:37:03,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 125 [2024-11-02 22:37:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:37:03,322 INFO L225 Difference]: With dead ends: 169 [2024-11-02 22:37:03,322 INFO L226 Difference]: Without dead ends: 113 [2024-11-02 22:37:03,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:37:03,324 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-02 22:37:03,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 157 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-02 22:37:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-02 22:37:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2024-11-02 22:37:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-02 22:37:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 160 transitions. [2024-11-02 22:37:03,353 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 160 transitions. Word has length 125 [2024-11-02 22:37:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:37:03,354 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 160 transitions. [2024-11-02 22:37:03,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-02 22:37:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 160 transitions. [2024-11-02 22:37:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 22:37:03,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:37:03,357 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:37:03,425 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 22:37:03,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:37:03,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:37:03,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:37:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1242198040, now seen corresponding path program 1 times [2024-11-02 22:37:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:37:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792433587] [2024-11-02 22:37:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:37:03,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:37:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:37:03,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:37:03,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 22:37:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:37:04,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 22:37:04,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:37:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:37:08,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:37:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-02 22:37:09,515 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:37:09,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792433587] [2024-11-02 22:37:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [792433587] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:37:09,515 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:37:09,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2024-11-02 22:37:09,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365094534] [2024-11-02 22:37:09,516 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:37:09,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 22:37:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:37:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 22:37:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:37:09,518 INFO L87 Difference]: Start difference. First operand 111 states and 160 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-02 22:37:14,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:18,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:22,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:24,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:28,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:31,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:37:35,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []