/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 19:49:33,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 19:49:33,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 19:49:33,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 19:49:33,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 19:49:33,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 19:49:33,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 19:49:33,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 19:49:33,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 19:49:33,929 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 19:49:33,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 19:49:33,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 19:49:33,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 19:49:33,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 19:49:33,931 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 19:49:33,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 19:49:33,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 19:49:33,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 19:49:33,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 19:49:33,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 19:49:33,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 19:49:33,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 19:49:33,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 19:49:33,933 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 19:49:33,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 19:49:33,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 19:49:33,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 19:49:33,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:49:33,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 19:49:33,936 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 19:49:33,937 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 19:49:33,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 19:49:34,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 19:49:34,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 19:49:34,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 19:49:34,149 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 19:49:34,149 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 19:49:34,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-37.i [2023-12-22 19:49:35,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 19:49:35,327 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 19:49:35,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-37.i [2023-12-22 19:49:35,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bf91bad/0ffd92e463f04c1db2a840d18360fa71/FLAG07561f7e3 [2023-12-22 19:49:35,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bf91bad/0ffd92e463f04c1db2a840d18360fa71 [2023-12-22 19:49:35,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 19:49:35,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 19:49:35,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 19:49:35,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 19:49:35,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 19:49:35,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3925778e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35, skipping insertion in model container [2023-12-22 19:49:35,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 19:49:35,505 WARN L239 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_codestructure_dependencies_file-37.i[919,932] [2023-12-22 19:49:35,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:49:35,554 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 19:49:35,561 WARN L239 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_codestructure_dependencies_file-37.i[919,932] [2023-12-22 19:49:35,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:49:35,590 INFO L206 MainTranslator]: Completed translation [2023-12-22 19:49:35,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35 WrapperNode [2023-12-22 19:49:35,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 19:49:35,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 19:49:35,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 19:49:35,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 19:49:35,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,622 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2023-12-22 19:49:35,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 19:49:35,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 19:49:35,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 19:49:35,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 19:49:35,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,657 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]. [2023-12-22 19:49:35,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 19:49:35,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 19:49:35,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 19:49:35,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 19:49:35,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (1/1) ... [2023-12-22 19:49:35,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:49:35,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 19:49:35,734 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) [2023-12-22 19:49:35,752 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 [2023-12-22 19:49:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 19:49:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 19:49:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 19:49:35,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 19:49:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 19:49:35,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 19:49:35,836 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 19:49:35,837 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 19:49:46,073 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 19:49:46,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 19:49:46,123 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 19:49:46,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:49:46 BoogieIcfgContainer [2023-12-22 19:49:46,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 19:49:46,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 19:49:46,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 19:49:46,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 19:49:46,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:49:35" (1/3) ... [2023-12-22 19:49:46,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d218b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:49:46, skipping insertion in model container [2023-12-22 19:49:46,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:35" (2/3) ... [2023-12-22 19:49:46,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d218b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:49:46, skipping insertion in model container [2023-12-22 19:49:46,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:49:46" (3/3) ... [2023-12-22 19:49:46,129 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-37.i [2023-12-22 19:49:46,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 19:49:46,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 19:49:46,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 19:49:46,175 INFO L357 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, mHoare=true, 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;@10ed25c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 19:49:46,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 19:49:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-22 19:49:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-22 19:49:46,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:49:46,190 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:49:46,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:49:46,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:49:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 743945599, now seen corresponding path program 1 times [2023-12-22 19:49:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:49:46,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060329070] [2023-12-22 19:49:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:49:46,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:49:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:49:46,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 19:49:46,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 19:49:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:49:46,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 19:49:46,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:49:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-12-22 19:49:46,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:49:46,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:49:46,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060329070] [2023-12-22 19:49:46,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060329070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:49:46,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:49:46,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 19:49:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68125940] [2023-12-22 19:49:46,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:49:46,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 19:49:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:49:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 19:49:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 19:49:46,838 INFO L87 Difference]: Start difference. First operand has 56 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-22 19:49:51,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:49:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:49:51,043 INFO L93 Difference]: Finished difference Result 109 states and 194 transitions. [2023-12-22 19:49:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 19:49:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2023-12-22 19:49:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:49:51,119 INFO L225 Difference]: With dead ends: 109 [2023-12-22 19:49:51,119 INFO L226 Difference]: Without dead ends: 54 [2023-12-22 19:49:51,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 19:49:51,123 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-22 19:49:51,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-22 19:49:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-22 19:49:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-22 19:49:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-22 19:49:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 82 transitions. [2023-12-22 19:49:51,162 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 82 transitions. Word has length 124 [2023-12-22 19:49:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:49:51,163 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 82 transitions. [2023-12-22 19:49:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-22 19:49:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 82 transitions. [2023-12-22 19:49:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-22 19:49:51,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:49:51,165 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:49:51,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 19:49:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:49:51,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:49:51,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:49:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1343974459, now seen corresponding path program 1 times [2023-12-22 19:49:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:49:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624966393] [2023-12-22 19:49:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:49:51,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:49:51,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:49:51,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 19:49:51,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 19:49:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:49:51,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 19:49:51,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:49:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 21 proven. 384 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-22 19:49:55,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 19:49:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-22 19:49:55,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:49:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624966393] [2023-12-22 19:49:55,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624966393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 19:49:55,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 19:49:55,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-22 19:49:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951964828] [2023-12-22 19:49:55,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 19:49:55,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 19:49:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:49:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 19:49:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-22 19:49:55,833 INFO L87 Difference]: Start difference. First operand 54 states and 82 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-22 19:49:59,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:01,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:03,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:07,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:11,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:15,955 WARN L539 Checker$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 [] [2023-12-22 19:50:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:50:15,958 INFO L93 Difference]: Finished difference Result 113 states and 168 transitions. [2023-12-22 19:50:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 19:50:16,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 124 [2023-12-22 19:50:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:50:16,022 INFO L225 Difference]: With dead ends: 113 [2023-12-22 19:50:16,022 INFO L226 Difference]: Without dead ends: 60 [2023-12-22 19:50:16,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-22 19:50:16,023 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 146 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 126 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-12-22 19:50:16,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 95 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 148 Invalid, 3 Unknown, 0 Unchecked, 19.4s Time] [2023-12-22 19:50:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-22 19:50:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-12-22 19:50:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-22 19:50:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2023-12-22 19:50:16,036 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 124 [2023-12-22 19:50:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:50:16,037 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2023-12-22 19:50:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-22 19:50:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2023-12-22 19:50:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 19:50:16,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:50:16,039 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:50:16,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 19:50:16,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:50:16,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:50:16,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:50:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -69348993, now seen corresponding path program 1 times [2023-12-22 19:50:16,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:50:16,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909628324] [2023-12-22 19:50:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:50:16,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:50:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:50:16,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 19:50:16,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 19:50:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:50:16,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 19:50:16,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:50:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-22 19:50:16,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:50:16,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:50:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909628324] [2023-12-22 19:50:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909628324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:50:16,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:50:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 19:50:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292476] [2023-12-22 19:50:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:50:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 19:50:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:50:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 19:50:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 19:50:16,731 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 19:50:21,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:50:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:50:21,156 INFO L93 Difference]: Finished difference Result 130 states and 188 transitions. [2023-12-22 19:50:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 19:50:21,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-22 19:50:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:50:21,158 INFO L225 Difference]: With dead ends: 130 [2023-12-22 19:50:21,158 INFO L226 Difference]: Without dead ends: 73 [2023-12-22 19:50:21,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 19:50:21,159 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-22 19:50:21,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-12-22 19:50:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-22 19:50:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-12-22 19:50:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 42 states have internal predecessors, (49), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-22 19:50:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2023-12-22 19:50:21,168 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 103 transitions. Word has length 125 [2023-12-22 19:50:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:50:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 103 transitions. [2023-12-22 19:50:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 19:50:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 103 transitions. [2023-12-22 19:50:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 19:50:21,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:50:21,170 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:50:21,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 19:50:21,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:50:21,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:50:21,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:50:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash -12090691, now seen corresponding path program 1 times [2023-12-22 19:50:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:50:21,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660991835] [2023-12-22 19:50:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:50:21,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 19:50:21,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:50:21,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 19:50:21,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 19:50:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:50:21,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-22 19:50:21,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:50:48,288 WARN L293 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:51:32,514 WARN L293 SmtUtils]: Spent 13.28s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:52:48,802 WARN L293 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:53:18,643 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:53:25,561 WARN L293 SmtUtils]: Spent 6.92s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:53:33,412 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:54:20,007 WARN L293 SmtUtils]: Spent 19.93s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:54:48,115 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:55:20,121 WARN L293 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:56:14,324 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:56:33,271 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 16) c_~var_1_3~0))) (let ((.cse2 (bvneg .cse9)) (.cse3 ((_ zero_extend 16) c_~var_1_17~0))) (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq c_~var_1_9~0 .cse0) (fp.geq c_~var_1_9~0 .cse1)) (and (fp.leq c_~var_1_9~0 (fp.neg .cse1)) (fp.geq c_~var_1_9~0 (fp.neg .cse0))))) (fp.gt c_~var_1_13~0 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_~var_1_20~0 c_~var_1_15~0) (fp.sub c_currentRoundingMode c_~var_1_21~0 c_~var_1_16~0))) (= c_~var_1_10~0 c_~var_1_9~0) (bvsgt (bvadd .cse2 ((_ zero_extend 16) c_~var_1_2~0)) .cse3) (= c_~var_1_17~0 ((_ extract 15 0) (bvadd .cse2 ((_ zero_extend 16) c_~var_1_18~0)))) (let ((.cse4 ((_ sign_extend 24) c_~var_1_12~0)) (.cse6 ((_ sign_extend 24) c_~var_1_22~0))) (let ((.cse5 (bvsgt .cse4 .cse6))) (or (and (= c_~var_1_19~0 ((_ extract 7 0) .cse4)) .cse5) (and (not .cse5) (= c_~var_1_19~0 ((_ extract 7 0) .cse6)))))) (let ((.cse8 (bvadd .cse9 ((_ sign_extend 24) c_~var_1_11~0)))) (let ((.cse7 (bvslt .cse8 .cse3))) (or (and (not .cse7) (= c_~var_1_1~0 .cse3)) (and .cse7 (= c_~var_1_1~0 .cse8))))) (= (_ bv0 8) c_~var_1_14~0)))) is different from false [2023-12-22 19:57:23,437 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:57:35,577 WARN L293 SmtUtils]: Spent 7.98s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:59:24,729 WARN L293 SmtUtils]: Spent 51.12s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-22 20:02:12,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 20:02:12,652 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 20:02:13,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 20:02:14,731 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-22 20:02:14,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown