/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_loopvsstraightlinecode_50-while_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 03:42:31,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 03:42:31,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 03:42:31,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 03:42:31,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 03:42:31,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 03:42:31,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 03:42:31,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 03:42:31,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 03:42:31,496 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 03:42:31,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 03:42:31,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 03:42:31,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 03:42:31,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 03:42:31,498 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 03:42:31,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 03:42:31,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 03:42:31,499 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 03:42:31,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 03:42:31,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 03:42:31,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 03:42:31,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 03:42:31,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 03:42:31,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 03:42:31,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 03:42:31,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 03:42:31,503 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 03:42:31,504 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 03:42:31,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 03:42:31,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 03:42:31,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 03:42:31,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 03:42:31,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 03:42:31,703 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 03:42:31,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-15.i [2023-12-24 03:42:32,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 03:42:32,844 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 03:42:32,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-15.i [2023-12-24 03:42:32,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d94858a/46adc962b4dd428fa2bf0bd27db856ef/FLAG44d569ed4 [2023-12-24 03:42:32,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d94858a/46adc962b4dd428fa2bf0bd27db856ef [2023-12-24 03:42:32,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 03:42:32,869 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 03:42:32,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 03:42:32,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 03:42:32,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 03:42:32,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:42:32" (1/1) ... [2023-12-24 03:42:32,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ce961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:32, skipping insertion in model container [2023-12-24 03:42:32,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:42:32" (1/1) ... [2023-12-24 03:42:32,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 03:42:32,983 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_loopvsstraightlinecode_50-while_file-15.i[915,928] [2023-12-24 03:42:33,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 03:42:33,036 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 03:42:33,048 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_loopvsstraightlinecode_50-while_file-15.i[915,928] [2023-12-24 03:42:33,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 03:42:33,080 INFO L206 MainTranslator]: Completed translation [2023-12-24 03:42:33,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33 WrapperNode [2023-12-24 03:42:33,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 03:42:33,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 03:42:33,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 03:42:33,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 03:42:33,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,124 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2023-12-24 03:42:33,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 03:42:33,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 03:42:33,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 03:42:33,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 03:42:33,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,148 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]. [2023-12-24 03:42:33,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 03:42:33,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 03:42:33,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 03:42:33,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 03:42:33,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (1/1) ... [2023-12-24 03:42:33,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 03:42:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 03:42:33,189 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) [2023-12-24 03:42:33,209 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 [2023-12-24 03:42:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 03:42:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 03:42:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 03:42:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 03:42:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 03:42:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 03:42:33,299 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 03:42:33,301 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 03:42:36,018 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 03:42:36,051 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 03:42:36,051 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 03:42:36,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:42:36 BoogieIcfgContainer [2023-12-24 03:42:36,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 03:42:36,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 03:42:36,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 03:42:36,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 03:42:36,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:42:32" (1/3) ... [2023-12-24 03:42:36,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d054c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:42:36, skipping insertion in model container [2023-12-24 03:42:36,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:42:33" (2/3) ... [2023-12-24 03:42:36,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d054c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:42:36, skipping insertion in model container [2023-12-24 03:42:36,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:42:36" (3/3) ... [2023-12-24 03:42:36,057 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-15.i [2023-12-24 03:42:36,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 03:42:36,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 03:42:36,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 03:42:36,106 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;@6586abfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 03:42:36,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 03:42:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 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) [2023-12-24 03:42:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 03:42:36,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:42:36,119 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, 1, 1, 1] [2023-12-24 03:42:36,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:42:36,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:42:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 396515768, now seen corresponding path program 1 times [2023-12-24 03:42:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:42:36,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979591070] [2023-12-24 03:42:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:42:36,132 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 [2023-12-24 03:42:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:42:36,134 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) [2023-12-24 03:42:36,176 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 [2023-12-24 03:42:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:42:36,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 03:42:36,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:42:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-24 03:42:36,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 03:42:36,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:42:36,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979591070] [2023-12-24 03:42:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979591070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 03:42:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 03:42:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 03:42:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740705941] [2023-12-24 03:42:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 03:42:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 03:42:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:42:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 03:42:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 03:42:36,575 INFO L87 Difference]: Start difference. First operand has 61 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2023-12-24 03:42:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:42:37,321 INFO L93 Difference]: Finished difference Result 119 states and 206 transitions. [2023-12-24 03:42:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 03:42:37,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 128 [2023-12-24 03:42:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:42:37,348 INFO L225 Difference]: With dead ends: 119 [2023-12-24 03:42:37,348 INFO L226 Difference]: Without dead ends: 59 [2023-12-24 03:42:37,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 03:42:37,355 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 03:42:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 03:42:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-24 03:42:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-24 03:42:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 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) [2023-12-24 03:42:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2023-12-24 03:42:37,389 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 128 [2023-12-24 03:42:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:42:37,389 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2023-12-24 03:42:37,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2023-12-24 03:42:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2023-12-24 03:42:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 03:42:37,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:42:37,393 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, 1, 1, 1] [2023-12-24 03:42:37,401 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 [2023-12-24 03:42:37,593 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 [2023-12-24 03:42:37,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:42:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:42:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash -10624788, now seen corresponding path program 1 times [2023-12-24 03:42:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:42:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086394894] [2023-12-24 03:42:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:42:37,595 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 [2023-12-24 03:42:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:42:37,598 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) [2023-12-24 03:42:37,602 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 [2023-12-24 03:42:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:42:37,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 03:42:37,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:42:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 03:42:38,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 03:42:38,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:42:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086394894] [2023-12-24 03:42:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086394894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 03:42:38,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 03:42:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 03:42:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237438151] [2023-12-24 03:42:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 03:42:38,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 03:42:38,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:42:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 03:42:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 03:42:38,674 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-12-24 03:42:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:42:40,673 INFO L93 Difference]: Finished difference Result 176 states and 266 transitions. [2023-12-24 03:42:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 03:42:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 128 [2023-12-24 03:42:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:42:40,697 INFO L225 Difference]: With dead ends: 176 [2023-12-24 03:42:40,697 INFO L226 Difference]: Without dead ends: 118 [2023-12-24 03:42:40,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 03:42:40,698 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 50 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 03:42:40,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 245 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 03:42:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-24 03:42:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 98. [2023-12-24 03:42:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 03:42:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 147 transitions. [2023-12-24 03:42:40,716 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 147 transitions. Word has length 128 [2023-12-24 03:42:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:42:40,716 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 147 transitions. [2023-12-24 03:42:40,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-12-24 03:42:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 147 transitions. [2023-12-24 03:42:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 03:42:40,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:42:40,718 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, 1, 1, 1, 1] [2023-12-24 03:42:40,726 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 [2023-12-24 03:42:40,918 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 [2023-12-24 03:42:40,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:42:40,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:42:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -695664293, now seen corresponding path program 1 times [2023-12-24 03:42:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:42:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976953275] [2023-12-24 03:42:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:42:40,920 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 [2023-12-24 03:42:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:42:40,921 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) [2023-12-24 03:42:40,928 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 [2023-12-24 03:42:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:42:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 03:42:41,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:42:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 03:42:42,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 03:42:42,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:42:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976953275] [2023-12-24 03:42:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976953275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 03:42:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 03:42:42,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 03:42:42,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538708975] [2023-12-24 03:42:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 03:42:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 03:42:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:42:42,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 03:42:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 03:42:42,786 INFO L87 Difference]: Start difference. First operand 98 states and 147 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-12-24 03:42:44,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:42:45,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:42:47,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:42:49,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 03:42:53,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 03:42:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:42:55,055 INFO L93 Difference]: Finished difference Result 214 states and 323 transitions. [2023-12-24 03:42:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 03:42:55,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 129 [2023-12-24 03:42:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:42:55,074 INFO L225 Difference]: With dead ends: 214 [2023-12-24 03:42:55,074 INFO L226 Difference]: Without dead ends: 156 [2023-12-24 03:42:55,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 03:42:55,075 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 76 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-24 03:42:55,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 218 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-24 03:42:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-24 03:42:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 100. [2023-12-24 03:42:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 03:42:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 149 transitions. [2023-12-24 03:42:55,098 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 149 transitions. Word has length 129 [2023-12-24 03:42:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:42:55,099 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 149 transitions. [2023-12-24 03:42:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-12-24 03:42:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 149 transitions. [2023-12-24 03:42:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 03:42:55,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:42:55,105 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, 1, 1, 1, 1] [2023-12-24 03:42:55,113 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 [2023-12-24 03:42:55,312 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 [2023-12-24 03:42:55,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:42:55,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:42:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash 5400285, now seen corresponding path program 1 times [2023-12-24 03:42:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:42:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79405714] [2023-12-24 03:42:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:42:55,314 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 [2023-12-24 03:42:55,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:42:55,315 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) [2023-12-24 03:42:55,326 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 [2023-12-24 03:42:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:42:55,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 03:42:55,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:42:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 336 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-24 03:42:56,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 03:42:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 03:42:56,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:42:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79405714] [2023-12-24 03:42:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79405714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 03:42:56,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 03:42:56,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 03:42:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118272137] [2023-12-24 03:42:56,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 03:42:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 03:42:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:42:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 03:42:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-24 03:42:56,497 INFO L87 Difference]: Start difference. First operand 100 states and 149 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2023-12-24 03:42:58,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:43:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:43:00,751 INFO L93 Difference]: Finished difference Result 234 states and 339 transitions. [2023-12-24 03:43:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 03:43:00,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 129 [2023-12-24 03:43:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:43:00,770 INFO L225 Difference]: With dead ends: 234 [2023-12-24 03:43:00,770 INFO L226 Difference]: Without dead ends: 174 [2023-12-24 03:43:00,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-12-24 03:43:00,772 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 316 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 03:43:00,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 239 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 03:43:00,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-24 03:43:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 106. [2023-12-24 03:43:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) [2023-12-24 03:43:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2023-12-24 03:43:00,787 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 129 [2023-12-24 03:43:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:43:00,787 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2023-12-24 03:43:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2023-12-24 03:43:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2023-12-24 03:43:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 03:43:00,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:43:00,789 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, 1, 1, 1, 1, 1] [2023-12-24 03:43:00,800 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 [2023-12-24 03:43:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 [2023-12-24 03:43:00,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:43:00,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:43:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash -613200700, now seen corresponding path program 1 times [2023-12-24 03:43:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:43:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786364643] [2023-12-24 03:43:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:43:00,998 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 [2023-12-24 03:43:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:43:00,999 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-12-24 03:43:01,017 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 (6)] Waiting until timeout for monitored process [2023-12-24 03:43:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:43:01,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 03:43:01,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:43:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 289 proven. 12 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-24 03:43:01,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 03:43:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 03:43:01,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:43:01,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786364643] [2023-12-24 03:43:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786364643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 03:43:01,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 03:43:01,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-24 03:43:01,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130218204] [2023-12-24 03:43:01,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 03:43:01,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 03:43:01,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:43:01,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 03:43:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 03:43:01,546 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 03:43:03,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:43:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:43:03,186 INFO L93 Difference]: Finished difference Result 181 states and 250 transitions. [2023-12-24 03:43:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 03:43:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2023-12-24 03:43:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:43:03,209 INFO L225 Difference]: With dead ends: 181 [2023-12-24 03:43:03,209 INFO L226 Difference]: Without dead ends: 119 [2023-12-24 03:43:03,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-24 03:43:03,210 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 84 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 03:43:03,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 124 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 03:43:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-24 03:43:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-12-24 03:43:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 03:43:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 149 transitions. [2023-12-24 03:43:03,226 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 149 transitions. Word has length 130 [2023-12-24 03:43:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:43:03,226 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 149 transitions. [2023-12-24 03:43:03,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 03:43:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 149 transitions. [2023-12-24 03:43:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 03:43:03,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:43:03,227 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, 1, 1, 1, 1, 1] [2023-12-24 03:43:03,235 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 03:43:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-12-24 03:43:03,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:43:03,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:43:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -742488956, now seen corresponding path program 1 times [2023-12-24 03:43:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:43:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390648227] [2023-12-24 03:43:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:43:03,435 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 [2023-12-24 03:43:03,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:43:03,436 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-24 03:43:03,437 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 (7)] Waiting until timeout for monitored process [2023-12-24 03:43:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:43:03,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 03:43:03,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:43:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 289 proven. 12 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-24 03:43:03,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 03:43:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 03:43:03,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:43:03,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390648227] [2023-12-24 03:43:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390648227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 03:43:03,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 03:43:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-24 03:43:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65406246] [2023-12-24 03:43:03,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 03:43:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 03:43:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:43:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 03:43:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 03:43:03,979 INFO L87 Difference]: Start difference. First operand 111 states and 149 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 03:43:05,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 03:43:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:43:05,915 INFO L93 Difference]: Finished difference Result 182 states and 241 transitions. [2023-12-24 03:43:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 03:43:05,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2023-12-24 03:43:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:43:05,940 INFO L225 Difference]: With dead ends: 182 [2023-12-24 03:43:05,940 INFO L226 Difference]: Without dead ends: 119 [2023-12-24 03:43:05,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-24 03:43:05,943 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 103 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 03:43:05,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 125 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 03:43:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-24 03:43:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-12-24 03:43:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 03:43:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 148 transitions. [2023-12-24 03:43:05,973 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 148 transitions. Word has length 130 [2023-12-24 03:43:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:43:05,974 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 148 transitions. [2023-12-24 03:43:05,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 03:43:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 148 transitions. [2023-12-24 03:43:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 03:43:05,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:43:05,975 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, 1, 1, 1, 1, 1] [2023-12-24 03:43:05,983 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 (7)] Forceful destruction successful, exit code 0 [2023-12-24 03:43:06,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-24 03:43:06,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:43:06,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:43:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -685230654, now seen corresponding path program 1 times [2023-12-24 03:43:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:43:06,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378606735] [2023-12-24 03:43:06,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:43:06,178 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 [2023-12-24 03:43:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:43:06,179 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-12-24 03:43:06,180 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 (8)] Waiting until timeout for monitored process [2023-12-24 03:43:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:43:06,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 03:43:06,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:43:37,507 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 03:44:28,501 WARN L293 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 03:45:03,795 WARN L293 SmtUtils]: Spent 10.88s 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) [2023-12-24 03:46:03,399 WARN L293 SmtUtils]: Spent 13.61s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 03:47:10,714 WARN L293 SmtUtils]: Spent 14.67s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)