/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-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 19:44:47,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 19:44:47,383 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 19:44:47,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 19:44:47,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 19:44:47,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 19:44:47,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 19:44:47,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 19:44:47,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 19:44:47,417 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 19:44:47,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 19:44:47,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 19:44:47,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 19:44:47,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 19:44:47,419 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 19:44:47,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 19:44:47,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 19:44:47,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 19:44:47,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 19:44:47,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 19:44:47,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 19:44:47,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 19:44:47,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 19:44:47,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 19:44:47,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:44:47,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 19:44:47,424 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 19:44:47,425 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 19:44:47,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 19:44:47,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 19:44:47,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 19:44:47,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 19:44:47,635 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 19:44:47,635 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 19:44:47,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-27.i [2023-12-22 19:44:48,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 19:44:48,849 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 19:44:48,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-27.i [2023-12-22 19:44:48,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e917bc38/a81a68933aec4d7abac86badca7e84eb/FLAG99e811181 [2023-12-22 19:44:48,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e917bc38/a81a68933aec4d7abac86badca7e84eb [2023-12-22 19:44:48,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 19:44:48,869 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 19:44:48,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 19:44:48,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 19:44:48,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 19:44:48,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:48" (1/1) ... [2023-12-22 19:44:48,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f59deee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:48, skipping insertion in model container [2023-12-22 19:44:48,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:48" (1/1) ... [2023-12-22 19:44:48,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 19:44:49,023 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-27.i[919,932] [2023-12-22 19:44:49,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:44:49,078 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 19:44:49,114 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-27.i[919,932] [2023-12-22 19:44:49,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:44:49,151 INFO L206 MainTranslator]: Completed translation [2023-12-22 19:44:49,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49 WrapperNode [2023-12-22 19:44:49,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 19:44:49,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 19:44:49,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 19:44:49,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 19:44:49,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,193 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2023-12-22 19:44:49,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 19:44:49,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 19:44:49,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 19:44:49,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 19:44:49,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,234 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 19:44:49,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 19:44:49,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 19:44:49,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 19:44:49,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 19:44:49,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (1/1) ... [2023-12-22 19:44:49,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:44:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 19:44:49,283 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 19:44:49,306 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 19:44:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 19:44:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 19:44:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 19:44:49,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 19:44:49,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 19:44:49,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 19:44:49,408 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 19:44:49,412 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 19:44:55,709 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 19:44:55,768 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 19:44:55,768 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 19:44:55,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:55 BoogieIcfgContainer [2023-12-22 19:44:55,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 19:44:55,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 19:44:55,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 19:44:55,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 19:44:55,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:44:48" (1/3) ... [2023-12-22 19:44:55,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecfc0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:55, skipping insertion in model container [2023-12-22 19:44:55,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:49" (2/3) ... [2023-12-22 19:44:55,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecfc0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:55, skipping insertion in model container [2023-12-22 19:44:55,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:55" (3/3) ... [2023-12-22 19:44:55,774 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-27.i [2023-12-22 19:44:55,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 19:44:55,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 19:44:55,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 19:44:55,825 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;@3aae8543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 19:44:55,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 19:44:55,828 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 19:44:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-22 19:44:55,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:44:55,837 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] [2023-12-22 19:44:55,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:44:55,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:44:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash -632538109, now seen corresponding path program 1 times [2023-12-22 19:44:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:44:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263402626] [2023-12-22 19:44:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:44:55,850 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 19:44:55,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:44:55,853 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 19:44:55,859 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 19:44:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:44:56,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 19:44:56,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:44:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-22 19:44:56,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:44:56,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:44:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263402626] [2023-12-22 19:44:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263402626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:44:56,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:44:56,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 19:44:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357416509] [2023-12-22 19:44:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:44:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 19:44:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:44:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 19:44:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 19:44:56,300 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 19:45:00,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:45:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:45:00,465 INFO L93 Difference]: Finished difference Result 109 states and 194 transitions. [2023-12-22 19:45:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 19:45:00,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 123 [2023-12-22 19:45:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:45:00,542 INFO L225 Difference]: With dead ends: 109 [2023-12-22 19:45:00,542 INFO L226 Difference]: Without dead ends: 54 [2023-12-22 19:45:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 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 19:45:00,549 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-22 19:45:00,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-22 19:45:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-22 19:45:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-22 19:45:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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 19:45:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 83 transitions. [2023-12-22 19:45:00,578 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 83 transitions. Word has length 123 [2023-12-22 19:45:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:45:00,578 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 83 transitions. [2023-12-22 19:45:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 19:45:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 83 transitions. [2023-12-22 19:45:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-22 19:45:00,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:45:00,581 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] [2023-12-22 19:45:00,592 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 19:45:00,791 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 19:45:00,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:45:00,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:45:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash -509004533, now seen corresponding path program 1 times [2023-12-22 19:45:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:45:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010007866] [2023-12-22 19:45:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:45:00,794 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 19:45:00,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:45:00,795 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 19:45:00,819 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 19:45:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:45:01,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 19:45:01,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:45:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-22 19:45:01,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 19:45:01,700 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 19:45:01,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:45:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010007866] [2023-12-22 19:45:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010007866] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 19:45:01,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 19:45:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-22 19:45:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355834998] [2023-12-22 19:45:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:45:01,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 19:45:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:45:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 19:45:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-22 19:45:01,705 INFO L87 Difference]: Start difference. First operand 54 states and 83 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:45:02,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:45:05,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:45:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:45:05,322 INFO L93 Difference]: Finished difference Result 111 states and 168 transitions. [2023-12-22 19:45:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 19:45:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 123 [2023-12-22 19:45:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:45:05,377 INFO L225 Difference]: With dead ends: 111 [2023-12-22 19:45:05,377 INFO L226 Difference]: Without dead ends: 58 [2023-12-22 19:45:05,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-22 19:45:05,379 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 47 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-22 19:45:05,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 106 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-22 19:45:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-22 19:45:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-22 19:45:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 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 19:45:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2023-12-22 19:45:05,397 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 123 [2023-12-22 19:45:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:45:05,398 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2023-12-22 19:45:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:45:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2023-12-22 19:45:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-22 19:45:05,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:45:05,400 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 19:45:05,414 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 (3)] Forceful destruction successful, exit code 0 [2023-12-22 19:45:05,603 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 19:45:05,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:45:05,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:45:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1936013970, now seen corresponding path program 1 times [2023-12-22 19:45:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:45:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054686406] [2023-12-22 19:45:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:45:05,607 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 19:45:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:45:05,608 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 19:45:05,635 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 19:45:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:45:05,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 19:45:05,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:45:06,726 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 19:45:06,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:45:06,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:45:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054686406] [2023-12-22 19:45:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054686406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:45:06,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:45:06,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 19:45:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348843562] [2023-12-22 19:45:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:45:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 19:45:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:45:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 19:45:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 19:45:06,729 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 19:45:10,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:45:13,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 19:45:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:45:13,772 INFO L93 Difference]: Finished difference Result 172 states and 253 transitions. [2023-12-22 19:45:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 19:45:13,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 124 [2023-12-22 19:45:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:45:13,774 INFO L225 Difference]: With dead ends: 172 [2023-12-22 19:45:13,774 INFO L226 Difference]: Without dead ends: 115 [2023-12-22 19:45:13,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 19:45:13,776 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 15 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-22 19:45:13,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 149 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-12-22 19:45:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-22 19:45:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2023-12-22 19:45:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 19:45:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2023-12-22 19:45:13,793 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 124 [2023-12-22 19:45:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:45:13,793 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2023-12-22 19:45:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 19:45:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2023-12-22 19:45:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 19:45:13,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:45:13,795 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 19:45:13,818 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 19:45:14,018 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 19:45:14,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:45:14,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:45:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -360099472, now seen corresponding path program 1 times [2023-12-22 19:45:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:45:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957290003] [2023-12-22 19:45:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:45:14,023 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 19:45:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:45:14,024 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 19:45:14,048 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 19:45:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:45:14,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 19:45:14,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:45:39,744 WARN L293 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:45:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 358 proven. 72 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-22 19:45:58,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 19:46:03,794 WARN L854 $PredicateComparison]: unable to prove that (or (fp.gt c_~var_1_6~0 (fp.neg c_~var_1_7~0)) (forall ((~var_1_4~0 (_ FloatingPoint 8 24)) (~var_1_13~0 (_ FloatingPoint 8 24))) (not (fp.eq c_~var_1_6~0 (fp.div c_currentRoundingMode ~var_1_4~0 ~var_1_13~0))))) is different from false [2023-12-22 19:46:10,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:46:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957290003] [2023-12-22 19:46:10,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957290003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-22 19:46:10,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [743301038] [2023-12-22 19:46:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:46:10,134 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-22 19:46:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-22 19:46:10,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-22 19:46:10,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-22 19:46:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:46:11,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-22 19:46:11,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:47:34,846 WARN L293 SmtUtils]: Spent 20.63s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:48:51,636 WARN L293 SmtUtils]: Spent 23.49s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:49:11,320 WARN L293 SmtUtils]: Spent 5.02s 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 19:49:21,974 WARN L293 SmtUtils]: Spent 5.76s 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 19:50:35,915 WARN L293 SmtUtils]: Spent 27.32s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:51:55,314 WARN L293 SmtUtils]: Spent 25.35s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:52:07,716 WARN L293 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:52:21,896 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:52:42,012 WARN L293 SmtUtils]: Spent 5.26s 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 19:52:50,916 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:53:08,411 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:53:13,664 WARN L293 SmtUtils]: Spent 5.25s 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 19:53:32,241 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:53:38,693 WARN L293 SmtUtils]: Spent 6.45s 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 19:54:15,816 WARN L293 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 19:56:00,507 WARN L293 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 19:56:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 343 proven. 108 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-22 19:56:02,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-22 19:58:12,756 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 19:58:12,757 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 19:58:12,757 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 19:58:13,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-22 19:58:13,825 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 (5)] Ended with exit code 0 [2023-12-22 19:58:13,960 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 19:58:13,975 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