/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/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:05:19,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:05:19,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:05:19,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:05:19,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:05:19,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:05:19,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:05:19,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:05:19,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:05:19,204 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:05:19,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:05:19,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:05:19,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:05:19,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:05:19,205 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:05:19,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:05:19,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:05:19,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:05:19,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:05:19,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:05:19,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:05:19,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:05:19,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:05:19,212 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:05:19,212 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:05:19,213 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:05:19,213 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:05:19,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:05:19,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:05:19,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:05:19,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:05:19,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:05:19,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:05:19,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:05:19,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:19,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:05:19,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:05:19,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:05:19,219 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:05:19,220 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:19,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:05:19,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:05:19,221 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:05:19,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:05:19,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:05:19,221 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:05:19,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:05:19,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:05:19,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:05:19,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:05:19,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:05:19,487 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:05:19,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2023-12-25 06:05:20,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:05:20,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:05:20,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2023-12-25 06:05:20,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f644cd1/07c5886ea1344df393df6c672f1e1770/FLAG67e90a52b [2023-12-25 06:05:20,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f644cd1/07c5886ea1344df393df6c672f1e1770 [2023-12-25 06:05:20,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:05:20,800 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:05:20,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:20,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:05:20,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:05:20,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:20,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63658852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20, skipping insertion in model container [2023-12-25 06:05:20,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:20,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:05:20,949 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c[840,853] [2023-12-25 06:05:20,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:20,965 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:05:20,977 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c[840,853] [2023-12-25 06:05:20,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:20,988 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:05:20,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20 WrapperNode [2023-12-25 06:05:20,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:20,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:20,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:05:20,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:05:20,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,014 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-12-25 06:05:21,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:21,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:05:21,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:05:21,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:05:21,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,042 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]. [2023-12-25 06:05:21,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:05:21,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:05:21,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:05:21,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:05:21,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (1/1) ... [2023-12-25 06:05:21,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:05:21,088 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) [2023-12-25 06:05:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:05:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:05:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:05:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:05:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-12-25 06:05:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-12-25 06:05:21,104 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 [2023-12-25 06:05:21,162 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:05:21,164 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:05:21,269 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:05:21,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:05:21,313 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:05:21,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:21 BoogieIcfgContainer [2023-12-25 06:05:21,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:05:21,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:05:21,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:05:21,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:05:21,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:05:20" (1/3) ... [2023-12-25 06:05:21,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f5f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:21, skipping insertion in model container [2023-12-25 06:05:21,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:20" (2/3) ... [2023-12-25 06:05:21,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f5f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:21, skipping insertion in model container [2023-12-25 06:05:21,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:21" (3/3) ... [2023-12-25 06:05:21,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2023-12-25 06:05:21,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:05:21,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:05:21,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:05:21,389 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;@4742d3f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:05:21,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:05:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:05:21,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:21,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:21,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:21,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1536395142, now seen corresponding path program 1 times [2023-12-25 06:05:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772864803] [2023-12-25 06:05:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:21,427 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 [2023-12-25 06:05:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:21,429 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) [2023-12-25 06:05:21,435 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 [2023-12-25 06:05:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:21,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:21,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:21,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:21,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772864803] [2023-12-25 06:05:21,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772864803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:05:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711776226] [2023-12-25 06:05:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:21,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:05:21,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:05:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:05:21,635 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:21,779 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2023-12-25 06:05:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:05:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:05:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:21,787 INFO L225 Difference]: With dead ends: 27 [2023-12-25 06:05:21,787 INFO L226 Difference]: Without dead ends: 18 [2023-12-25 06:05:21,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:05:21,795 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:21,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-25 06:05:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-25 06:05:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-12-25 06:05:21,824 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2023-12-25 06:05:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-12-25 06:05:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-12-25 06:05:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-25 06:05:21,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:21,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:21,829 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 [2023-12-25 06:05:22,027 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 [2023-12-25 06:05:22,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:22,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1226103713, now seen corresponding path program 1 times [2023-12-25 06:05:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:22,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106581255] [2023-12-25 06:05:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:22,029 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 [2023-12-25 06:05:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:22,030 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) [2023-12-25 06:05:22,036 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 [2023-12-25 06:05:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:22,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 06:05:22,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:22,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:22,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106581255] [2023-12-25 06:05:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106581255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:22,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:22,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:05:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389716747] [2023-12-25 06:05:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:05:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:05:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:05:22,121 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:22,155 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-12-25 06:05:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:05:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-25 06:05:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:22,158 INFO L225 Difference]: With dead ends: 28 [2023-12-25 06:05:22,158 INFO L226 Difference]: Without dead ends: 20 [2023-12-25 06:05:22,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:05:22,160 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:22,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-25 06:05:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-12-25 06:05:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-25 06:05:22,172 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2023-12-25 06:05:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:22,173 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-25 06:05:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-25 06:05:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-25 06:05:22,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:22,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:22,181 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 [2023-12-25 06:05:22,376 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 [2023-12-25 06:05:22,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:22,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:22,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1532203166, now seen corresponding path program 1 times [2023-12-25 06:05:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:22,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559306944] [2023-12-25 06:05:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:22,378 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 [2023-12-25 06:05:22,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:22,379 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) [2023-12-25 06:05:22,381 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 [2023-12-25 06:05:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:22,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:05:22,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 06:05:22,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:22,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559306944] [2023-12-25 06:05:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559306944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774545782] [2023-12-25 06:05:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:22,714 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:22,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:22,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-25 06:05:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:22,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:05:22,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 06:05:22,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774545782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:23,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:23,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2023-12-25 06:05:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976802260] [2023-12-25 06:05:23,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:23,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:23,066 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:23,205 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2023-12-25 06:05:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:23,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2023-12-25 06:05:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:23,207 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:05:23,207 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:05:23,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:05:23,208 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:23,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:05:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 06:05:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:05:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:05:23,215 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2023-12-25 06:05:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:23,215 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:05:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:05:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-25 06:05:23,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:23,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:23,233 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 (4)] Ended with exit code 0 [2023-12-25 06:05:23,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:23,620 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:23,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:23,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1183598958, now seen corresponding path program 1 times [2023-12-25 06:05:23,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:23,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848093622] [2023-12-25 06:05:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:23,622 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 [2023-12-25 06:05:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:23,623 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) [2023-12-25 06:05:23,627 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 [2023-12-25 06:05:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:23,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:23,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:23,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:23,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848093622] [2023-12-25 06:05:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848093622] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [711810363] [2023-12-25 06:05:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:23,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:23,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:23,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-25 06:05:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:23,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:23,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:23,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [711810363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:23,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-25 06:05:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340508600] [2023-12-25 06:05:23,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:05:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:05:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:23,930 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:24,010 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-25 06:05:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:05:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-25 06:05:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:24,012 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:05:24,012 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:05:24,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:05:24,013 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:24,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:05:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 06:05:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:05:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-25 06:05:24,019 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 17 [2023-12-25 06:05:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:24,019 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-25 06:05:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-25 06:05:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-25 06:05:24,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:24,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:24,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:24,226 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 [2023-12-25 06:05:24,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-25 06:05:24,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:24,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1653375740, now seen corresponding path program 2 times [2023-12-25 06:05:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:24,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883994706] [2023-12-25 06:05:24,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:24,444 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 [2023-12-25 06:05:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:24,451 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) [2023-12-25 06:05:24,452 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 [2023-12-25 06:05:24,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:24,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:24,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:05:24,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:24,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883994706] [2023-12-25 06:05:24,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883994706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642775047] [2023-12-25 06:05:24,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:24,690 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:24,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-25 06:05:24,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:24,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:24,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:05:24,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642775047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:24,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-25 06:05:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559575283] [2023-12-25 06:05:24,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:24,955 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-25 06:05:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:25,081 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-12-25 06:05:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:25,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-12-25 06:05:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:25,083 INFO L225 Difference]: With dead ends: 40 [2023-12-25 06:05:25,083 INFO L226 Difference]: Without dead ends: 36 [2023-12-25 06:05:25,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:05:25,084 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:25,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 57 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-25 06:05:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-25 06:05:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (18), 9 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-25 06:05:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-12-25 06:05:25,090 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 23 [2023-12-25 06:05:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:25,090 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-12-25 06:05:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-25 06:05:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-12-25 06:05:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-25 06:05:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:25,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:25,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-25 06:05:25,313 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 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:25,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /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 [2023-12-25 06:05:25,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:25,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash 536524050, now seen corresponding path program 1 times [2023-12-25 06:05:25,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:25,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631086912] [2023-12-25 06:05:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:25,496 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 [2023-12-25 06:05:25,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:25,500 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-25 06:05:25,502 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 (10)] Waiting until timeout for monitored process [2023-12-25 06:05:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:25,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:25,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:05:25,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:25,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631086912] [2023-12-25 06:05:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631086912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2005325085] [2023-12-25 06:05:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:25,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:25,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-25 06:05:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:25,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:25,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:05:25,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2005325085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:25,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-25 06:05:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707836278] [2023-12-25 06:05:25,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:05:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:05:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:05:25,996 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:05:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:26,113 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2023-12-25 06:05:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:05:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2023-12-25 06:05:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:26,122 INFO L225 Difference]: With dead ends: 57 [2023-12-25 06:05:26,122 INFO L226 Difference]: Without dead ends: 21 [2023-12-25 06:05:26,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:26,124 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:26,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 42 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-25 06:05:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-25 06:05:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 06:05:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-12-25 06:05:26,128 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 24 [2023-12-25 06:05:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:26,128 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-12-25 06:05:26,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:05:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-12-25 06:05:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-25 06:05:26,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:26,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:26,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-25 06:05:26,332 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 (10)] Ended with exit code 0 [2023-12-25 06:05:26,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /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 [2023-12-25 06:05:26,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:26,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 889673888, now seen corresponding path program 3 times [2023-12-25 06:05:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937315240] [2023-12-25 06:05:26,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:26,531 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 [2023-12-25 06:05:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:26,536 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-25 06:05:26,537 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 (12)] Waiting until timeout for monitored process [2023-12-25 06:05:26,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:05:26,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:05:26,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:05:26,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:26,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937315240] [2023-12-25 06:05:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937315240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336328631] [2023-12-25 06:05:26,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:26,834 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:26,835 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-25 06:05:26,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:05:26,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:26,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:05:26,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:05:26,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:27,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336328631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:27,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:27,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-25 06:05:27,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350011128] [2023-12-25 06:05:27,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:27,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:05:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:05:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:05:27,152 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:05:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:27,261 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-12-25 06:05:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:05:27,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-12-25 06:05:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:27,265 INFO L225 Difference]: With dead ends: 28 [2023-12-25 06:05:27,265 INFO L226 Difference]: Without dead ends: 24 [2023-12-25 06:05:27,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:05:27,266 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:27,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 60 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-25 06:05:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-25 06:05:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:05:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-12-25 06:05:27,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 30 [2023-12-25 06:05:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:27,283 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-12-25 06:05:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:05:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-12-25 06:05:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-25 06:05:27,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:27,289 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:27,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:27,496 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 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:27,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /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 [2023-12-25 06:05:27,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:27,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 549945218, now seen corresponding path program 4 times [2023-12-25 06:05:27,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:27,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359127848] [2023-12-25 06:05:27,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:27,693 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 [2023-12-25 06:05:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:27,694 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-25 06:05:27,696 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 (14)] Waiting until timeout for monitored process [2023-12-25 06:05:27,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:27,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:27,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:05:27,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 06:05:27,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:28,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359127848] [2023-12-25 06:05:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359127848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991590368] [2023-12-25 06:05:28,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:28,048 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:28,065 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:28,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-25 06:05:28,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:28,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:28,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 06:05:28,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-25 06:05:28,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991590368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:28,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2023-12-25 06:05:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658735773] [2023-12-25 06:05:28,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:28,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:05:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:28,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:05:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:05:28,544 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-25 06:05:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:28,684 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-12-25 06:05:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:05:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-12-25 06:05:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:28,685 INFO L225 Difference]: With dead ends: 31 [2023-12-25 06:05:28,685 INFO L226 Difference]: Without dead ends: 27 [2023-12-25 06:05:28,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:05:28,686 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:28,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 83 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-25 06:05:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-25 06:05:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:05:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-12-25 06:05:28,689 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2023-12-25 06:05:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-12-25 06:05:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-25 06:05:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-12-25 06:05:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-25 06:05:28,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:28,690 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:28,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:28,899 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 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:29,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 [2023-12-25 06:05:29,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:29,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1347158946, now seen corresponding path program 5 times [2023-12-25 06:05:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634328778] [2023-12-25 06:05:29,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:29,098 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 [2023-12-25 06:05:29,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:29,099 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-25 06:05:29,100 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 (16)] Waiting until timeout for monitored process [2023-12-25 06:05:29,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:05:29,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:29,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:05:29,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-25 06:05:29,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:29,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634328778] [2023-12-25 06:05:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634328778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1040408540] [2023-12-25 06:05:29,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:29,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:29,521 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:29,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-25 06:05:29,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:05:29,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:29,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 06:05:29,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-25 06:05:29,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1040408540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:29,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 11 [2023-12-25 06:05:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693763451] [2023-12-25 06:05:29,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:29,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:05:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:29,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:05:29,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:29,979 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-25 06:05:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:30,190 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2023-12-25 06:05:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:05:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2023-12-25 06:05:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:30,191 INFO L225 Difference]: With dead ends: 34 [2023-12-25 06:05:30,192 INFO L226 Difference]: Without dead ends: 30 [2023-12-25 06:05:30,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:05:30,196 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:30,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-25 06:05:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-25 06:05:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 06:05:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-12-25 06:05:30,211 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 44 [2023-12-25 06:05:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-12-25 06:05:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-25 06:05:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-12-25 06:05:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 06:05:30,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:30,213 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:30,234 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 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:30,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-25 06:05:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:30,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1989300480, now seen corresponding path program 6 times [2023-12-25 06:05:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316978244] [2023-12-25 06:05:30,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:30,622 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 [2023-12-25 06:05:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:30,623 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-25 06:05:30,624 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 (18)] Waiting until timeout for monitored process [2023-12-25 06:05:30,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:05:30,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:30,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:05:30,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 06:05:30,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:31,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316978244] [2023-12-25 06:05:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316978244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [484937117] [2023-12-25 06:05:31,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:31,150 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:31,151 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:31,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-25 06:05:31,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:05:31,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:31,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:05:31,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 06:05:31,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [484937117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:31,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:31,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-12-25 06:05:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077937919] [2023-12-25 06:05:31,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:05:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:05:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:31,629 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:05:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:31,839 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2023-12-25 06:05:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:05:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2023-12-25 06:05:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:31,841 INFO L225 Difference]: With dead ends: 37 [2023-12-25 06:05:31,841 INFO L226 Difference]: Without dead ends: 33 [2023-12-25 06:05:31,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:05:31,842 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:31,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 138 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-25 06:05:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-25 06:05:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-25 06:05:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-12-25 06:05:31,845 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 51 [2023-12-25 06:05:31,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:31,845 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-12-25 06:05:31,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:05:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-12-25 06:05:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 06:05:31,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:31,847 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:31,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:32,055 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 (18)] Ended with exit code 0 [2023-12-25 06:05:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /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 [2023-12-25 06:05:32,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:32,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -659328604, now seen corresponding path program 7 times [2023-12-25 06:05:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:32,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262463564] [2023-12-25 06:05:32,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:32,254 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 [2023-12-25 06:05:32,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:32,255 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-25 06:05:32,257 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 (20)] Waiting until timeout for monitored process [2023-12-25 06:05:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:32,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:05:32,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-25 06:05:32,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:32,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262463564] [2023-12-25 06:05:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262463564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224916586] [2023-12-25 06:05:32,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:32,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:32,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-25 06:05:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:32,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 06:05:32,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-25 06:05:33,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:33,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1224916586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:33,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:33,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 13 [2023-12-25 06:05:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242764800] [2023-12-25 06:05:33,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:33,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:05:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:05:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:05:33,384 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:05:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:33,600 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2023-12-25 06:05:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:05:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2023-12-25 06:05:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:33,601 INFO L225 Difference]: With dead ends: 40 [2023-12-25 06:05:33,601 INFO L226 Difference]: Without dead ends: 36 [2023-12-25 06:05:33,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:05:33,602 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 176 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-25 06:05:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-25 06:05:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-25 06:05:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-12-25 06:05:33,605 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 58 [2023-12-25 06:05:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:33,606 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-12-25 06:05:33,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:05:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-12-25 06:05:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 06:05:33,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:33,607 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:33,617 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 (20)] Ended with exit code 0 [2023-12-25 06:05:33,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:34,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:34,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:34,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2048644226, now seen corresponding path program 8 times [2023-12-25 06:05:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442984058] [2023-12-25 06:05:34,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:34,019 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 [2023-12-25 06:05:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:34,024 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-25 06:05:34,025 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 (22)] Waiting until timeout for monitored process [2023-12-25 06:05:34,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:34,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:34,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:05:34,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-25 06:05:34,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:34,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442984058] [2023-12-25 06:05:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442984058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428879417] [2023-12-25 06:05:34,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:34,628 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:34,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:34,629 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:34,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-25 06:05:34,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:34,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:34,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:05:34,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-25 06:05:34,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [428879417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:35,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:35,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-12-25 06:05:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426947295] [2023-12-25 06:05:35,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:35,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:05:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:05:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:05:35,120 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-25 06:05:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:35,340 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2023-12-25 06:05:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:05:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2023-12-25 06:05:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:35,341 INFO L225 Difference]: With dead ends: 43 [2023-12-25 06:05:35,341 INFO L226 Difference]: Without dead ends: 39 [2023-12-25 06:05:35,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:05:35,342 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:35,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 210 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-25 06:05:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-25 06:05:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 06:05:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-25 06:05:35,345 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 65 [2023-12-25 06:05:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:35,345 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-25 06:05:35,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-25 06:05:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-25 06:05:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-25 06:05:35,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:35,346 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:35,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-25 06:05:35,553 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 (22)] Ended with exit code 0 [2023-12-25 06:05:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /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 [2023-12-25 06:05:35,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:35,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1137737050, now seen corresponding path program 9 times [2023-12-25 06:05:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:35,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784467583] [2023-12-25 06:05:35,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:35,750 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 [2023-12-25 06:05:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:35,751 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-25 06:05:35,752 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 (24)] Waiting until timeout for monitored process [2023-12-25 06:05:35,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:05:35,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:05:35,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-25 06:05:36,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:36,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784467583] [2023-12-25 06:05:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784467583] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [340153681] [2023-12-25 06:05:36,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:36,428 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:36,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-25 06:05:36,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:05:36,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:36,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:05:36,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-25 06:05:36,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:37,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [340153681] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:37,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:37,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2023-12-25 06:05:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442306758] [2023-12-25 06:05:37,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:37,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:05:37,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:05:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:05:37,058 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-25 06:05:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:37,325 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2023-12-25 06:05:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:05:37,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2023-12-25 06:05:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:37,326 INFO L225 Difference]: With dead ends: 46 [2023-12-25 06:05:37,326 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:05:37,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2023-12-25 06:05:37,327 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:37,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 252 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:05:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-25 06:05:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 06:05:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2023-12-25 06:05:37,330 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 72 [2023-12-25 06:05:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:37,331 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2023-12-25 06:05:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-25 06:05:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2023-12-25 06:05:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 06:05:37,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:37,332 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:37,336 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:37,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-25 06:05:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:37,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:37,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -179759876, now seen corresponding path program 10 times [2023-12-25 06:05:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107000158] [2023-12-25 06:05:37,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:37,737 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 [2023-12-25 06:05:37,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:37,738 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-25 06:05:37,740 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 (26)] Waiting until timeout for monitored process [2023-12-25 06:05:37,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:37,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:37,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:05:37,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-25 06:05:38,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:38,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107000158] [2023-12-25 06:05:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107000158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1882405592] [2023-12-25 06:05:38,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:38,484 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:38,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-25 06:05:38,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:38,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:38,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 06:05:38,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-12-25 06:05:38,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1882405592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:39,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 16 [2023-12-25 06:05:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457218791] [2023-12-25 06:05:39,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:39,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:05:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:05:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:05:39,143 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 06:05:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:39,477 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-12-25 06:05:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:05:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) Word has length 79 [2023-12-25 06:05:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:39,479 INFO L225 Difference]: With dead ends: 49 [2023-12-25 06:05:39,479 INFO L226 Difference]: Without dead ends: 45 [2023-12-25 06:05:39,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:05:39,481 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:39,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 302 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-25 06:05:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-25 06:05:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:05:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2023-12-25 06:05:39,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 79 [2023-12-25 06:05:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:39,485 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2023-12-25 06:05:39,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 06:05:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2023-12-25 06:05:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 06:05:39,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:39,486 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:39,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-12-25 06:05:39,694 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 (26)] Ended with exit code 0 [2023-12-25 06:05:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /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 [2023-12-25 06:05:39,891 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:39,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 85071528, now seen corresponding path program 11 times [2023-12-25 06:05:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318332189] [2023-12-25 06:05:39,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:39,892 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 [2023-12-25 06:05:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:39,917 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-25 06:05:39,950 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 (28)] Waiting until timeout for monitored process [2023-12-25 06:05:40,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:05:40,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:40,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:05:40,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-25 06:05:40,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:40,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318332189] [2023-12-25 06:05:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318332189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1115194517] [2023-12-25 06:05:40,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:40,717 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:40,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-25 06:05:40,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:05:40,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:40,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 06:05:40,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-25 06:05:41,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1115194517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:41,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 17 [2023-12-25 06:05:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394017816] [2023-12-25 06:05:41,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:41,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:05:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:05:41,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:05:41,421 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-25 06:05:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:41,762 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2023-12-25 06:05:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:05:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) Word has length 86 [2023-12-25 06:05:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:41,763 INFO L225 Difference]: With dead ends: 52 [2023-12-25 06:05:41,763 INFO L226 Difference]: Without dead ends: 48 [2023-12-25 06:05:41,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:05:41,764 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:41,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 352 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-25 06:05:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-25 06:05:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-25 06:05:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2023-12-25 06:05:41,767 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 86 [2023-12-25 06:05:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:41,767 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2023-12-25 06:05:41,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-25 06:05:41,767 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2023-12-25 06:05:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 06:05:41,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:41,768 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:41,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:41,976 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 (28)] Ended with exit code 0 [2023-12-25 06:05:42,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /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 [2023-12-25 06:05:42,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:42,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 224037754, now seen corresponding path program 12 times [2023-12-25 06:05:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875839930] [2023-12-25 06:05:42,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:42,173 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 [2023-12-25 06:05:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:42,174 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-25 06:05:42,178 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 (30)] Waiting until timeout for monitored process [2023-12-25 06:05:42,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:05:42,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:42,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:05:42,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-25 06:05:42,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:43,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875839930] [2023-12-25 06:05:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875839930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569900440] [2023-12-25 06:05:43,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:43,005 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-25 06:05:43,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:05:43,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:43,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:05:43,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-25 06:05:43,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569900440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:43,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2023-12-25 06:05:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196973620] [2023-12-25 06:05:43,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:43,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:05:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:05:43,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:05:43,787 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:05:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:44,181 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2023-12-25 06:05:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:05:44,182 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-12-25 06:05:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:44,183 INFO L225 Difference]: With dead ends: 55 [2023-12-25 06:05:44,183 INFO L226 Difference]: Without dead ends: 51 [2023-12-25 06:05:44,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:05:44,184 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 28 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:44,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 402 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-25 06:05:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-25 06:05:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-25 06:05:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2023-12-25 06:05:44,187 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 93 [2023-12-25 06:05:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:44,187 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2023-12-25 06:05:44,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:05:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2023-12-25 06:05:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 06:05:44,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:44,189 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:44,197 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 (30)] Ended with exit code 0 [2023-12-25 06:05:44,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-12-25 06:05:44,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:44,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:44,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 873270698, now seen corresponding path program 13 times [2023-12-25 06:05:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:44,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363761895] [2023-12-25 06:05:44,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:44,596 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 [2023-12-25 06:05:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:44,597 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-25 06:05:44,598 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 (32)] Waiting until timeout for monitored process [2023-12-25 06:05:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:44,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:05:44,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-12-25 06:05:44,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:45,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363761895] [2023-12-25 06:05:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363761895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810262383] [2023-12-25 06:05:45,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:45,417 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:45,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:45,418 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:45,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-12-25 06:05:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:45,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 06:05:45,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-25 06:05:45,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1810262383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:46,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 19 [2023-12-25 06:05:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523149942] [2023-12-25 06:05:46,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:05:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:05:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:05:46,255 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-25 06:05:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:46,681 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2023-12-25 06:05:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:05:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) Word has length 100 [2023-12-25 06:05:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:46,682 INFO L225 Difference]: With dead ends: 58 [2023-12-25 06:05:46,682 INFO L226 Difference]: Without dead ends: 54 [2023-12-25 06:05:46,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:05:46,683 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:46,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 461 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-25 06:05:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-25 06:05:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-25 06:05:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2023-12-25 06:05:46,686 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 100 [2023-12-25 06:05:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:46,687 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2023-12-25 06:05:46,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-25 06:05:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2023-12-25 06:05:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 06:05:46,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:46,687 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:46,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:46,893 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 (32)] Ended with exit code 0 [2023-12-25 06:05:47,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,32 /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 [2023-12-25 06:05:47,088 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:47,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2139705608, now seen corresponding path program 14 times [2023-12-25 06:05:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050885603] [2023-12-25 06:05:47,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:47,089 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 [2023-12-25 06:05:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:47,094 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-25 06:05:47,099 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 (34)] Waiting until timeout for monitored process [2023-12-25 06:05:47,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:47,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:47,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-25 06:05:47,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-25 06:05:47,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:47,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050885603] [2023-12-25 06:05:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050885603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1972045261] [2023-12-25 06:05:47,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:47,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:47,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:47,993 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:47,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-25 06:05:48,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:48,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:48,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-25 06:05:48,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-25 06:05:48,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1972045261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:48,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:48,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2023-12-25 06:05:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558123229] [2023-12-25 06:05:48,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:05:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:05:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:05:48,867 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-25 06:05:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:49,357 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2023-12-25 06:05:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:05:49,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2023-12-25 06:05:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:49,358 INFO L225 Difference]: With dead ends: 61 [2023-12-25 06:05:49,358 INFO L226 Difference]: Without dead ends: 57 [2023-12-25 06:05:49,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:05:49,358 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:49,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 522 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-25 06:05:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-25 06:05:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-25 06:05:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2023-12-25 06:05:49,361 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 107 [2023-12-25 06:05:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:49,362 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2023-12-25 06:05:49,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-25 06:05:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2023-12-25 06:05:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 06:05:49,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:49,363 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:49,370 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 (34)] Ended with exit code 0 [2023-12-25 06:05:49,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-12-25 06:05:49,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:49,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:49,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1707980884, now seen corresponding path program 15 times [2023-12-25 06:05:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:49,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602354129] [2023-12-25 06:05:49,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:49,769 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 [2023-12-25 06:05:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:49,770 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-25 06:05:49,797 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 (36)] Waiting until timeout for monitored process [2023-12-25 06:05:49,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-25 06:05:49,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:49,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 06:05:49,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-25 06:05:50,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:50,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602354129] [2023-12-25 06:05:50,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602354129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1282759828] [2023-12-25 06:05:50,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:50,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:50,854 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:50,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-25 06:05:51,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-25 06:05:51,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:51,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 06:05:51,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-25 06:05:51,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1282759828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:51,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2023-12-25 06:05:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478299638] [2023-12-25 06:05:51,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:05:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:05:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:05:51,850 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-25 06:05:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:52,368 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2023-12-25 06:05:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:05:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) Word has length 114 [2023-12-25 06:05:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:52,369 INFO L225 Difference]: With dead ends: 64 [2023-12-25 06:05:52,369 INFO L226 Difference]: Without dead ends: 60 [2023-12-25 06:05:52,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:05:52,370 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:52,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 588 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-25 06:05:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-25 06:05:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-25 06:05:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2023-12-25 06:05:52,374 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 114 [2023-12-25 06:05:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:52,374 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2023-12-25 06:05:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-25 06:05:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2023-12-25 06:05:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-25 06:05:52,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:52,375 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:52,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:52,586 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 (36)] Ended with exit code 0 [2023-12-25 06:05:52,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,36 /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 [2023-12-25 06:05:52,780 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:52,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1550082186, now seen corresponding path program 16 times [2023-12-25 06:05:52,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:52,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660841071] [2023-12-25 06:05:52,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:52,781 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 [2023-12-25 06:05:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:52,782 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-25 06:05:52,783 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 (38)] Waiting until timeout for monitored process [2023-12-25 06:05:52,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:52,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:52,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 06:05:52,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-25 06:05:53,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:53,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660841071] [2023-12-25 06:05:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660841071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61616529] [2023-12-25 06:05:53,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:53,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:53,855 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-25 06:05:54,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:54,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:54,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-25 06:05:54,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-12-25 06:05:54,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [61616529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:54,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:54,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 22 [2023-12-25 06:05:54,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156811586] [2023-12-25 06:05:54,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:54,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:05:54,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:05:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:05:54,870 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 22 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-25 06:05:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:55,481 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2023-12-25 06:05:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 06:05:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 22 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) Word has length 121 [2023-12-25 06:05:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:55,482 INFO L225 Difference]: With dead ends: 67 [2023-12-25 06:05:55,483 INFO L226 Difference]: Without dead ends: 63 [2023-12-25 06:05:55,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1518, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:05:55,484 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 70 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:55,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 659 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:05:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-25 06:05:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-25 06:05:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-25 06:05:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2023-12-25 06:05:55,489 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 121 [2023-12-25 06:05:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:55,490 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2023-12-25 06:05:55,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 22 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-25 06:05:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2023-12-25 06:05:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 06:05:55,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:55,491 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:55,496 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 (38)] Ended with exit code 0 [2023-12-25 06:05:55,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-12-25 06:05:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:55,896 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:55,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1292655442, now seen corresponding path program 17 times [2023-12-25 06:05:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978915158] [2023-12-25 06:05:55,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:55,897 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 [2023-12-25 06:05:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:55,898 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-25 06:05:55,900 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 (40)] Waiting until timeout for monitored process [2023-12-25 06:05:56,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-25 06:05:56,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:56,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 06:05:56,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-12-25 06:05:56,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:57,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978915158] [2023-12-25 06:05:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978915158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [194980274] [2023-12-25 06:05:57,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:57,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:05:57,193 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:05:57,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-25 06:05:57,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-25 06:05:57,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:57,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-25 06:05:57,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2023-12-25 06:05:57,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:58,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [194980274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:58,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 23 [2023-12-25 06:05:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312153427] [2023-12-25 06:05:58,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:05:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:58,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:05:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:05:58,368 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-25 06:05:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:58,997 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2023-12-25 06:05:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 06:05:58,998 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) Word has length 128 [2023-12-25 06:05:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:58,999 INFO L225 Difference]: With dead ends: 70 [2023-12-25 06:05:58,999 INFO L226 Difference]: Without dead ends: 66 [2023-12-25 06:05:58,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=1677, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:05:59,000 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:59,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 736 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:05:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-25 06:05:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-25 06:05:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-25 06:05:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2023-12-25 06:05:59,003 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 128 [2023-12-25 06:05:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:59,003 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2023-12-25 06:05:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-25 06:05:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2023-12-25 06:05:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 06:05:59,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:59,004 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:59,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-12-25 06:05:59,215 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 (40)] Ended with exit code 0 [2023-12-25 06:05:59,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,40 /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 [2023-12-25 06:05:59,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:59,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1805157132, now seen corresponding path program 18 times [2023-12-25 06:05:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:59,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534196027] [2023-12-25 06:05:59,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:59,415 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 [2023-12-25 06:05:59,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:59,416 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-25 06:05:59,419 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 (42)] Waiting until timeout for monitored process [2023-12-25 06:05:59,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:05:59,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:59,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 06:05:59,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 20 proven. 509 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2023-12-25 06:06:00,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:00,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534196027] [2023-12-25 06:06:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534196027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1915866243] [2023-12-25 06:06:00,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:06:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:00,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:00,813 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:00,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2023-12-25 06:06:01,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:06:01,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:01,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-25 06:06:01,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-12-25 06:06:01,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1915866243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:02,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 25 [2023-12-25 06:06:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326139455] [2023-12-25 06:06:02,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:06:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:06:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:06:02,023 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-25 06:06:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:02,690 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2023-12-25 06:06:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:06:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) Word has length 135 [2023-12-25 06:06:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:02,693 INFO L225 Difference]: With dead ends: 73 [2023-12-25 06:06:02,693 INFO L226 Difference]: Without dead ends: 69 [2023-12-25 06:06:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:06:02,694 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:02,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 815 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:06:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-25 06:06:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-25 06:06:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-25 06:06:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2023-12-25 06:06:02,726 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 135 [2023-12-25 06:06:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:02,726 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2023-12-25 06:06:02,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-25 06:06:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2023-12-25 06:06:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-25 06:06:02,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:02,727 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:02,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:02,939 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 (42)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:03,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,42 /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 [2023-12-25 06:06:03,134 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:03,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2116224176, now seen corresponding path program 19 times [2023-12-25 06:06:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631907421] [2023-12-25 06:06:03,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:03,135 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 [2023-12-25 06:06:03,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:03,138 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-25 06:06:03,139 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 (44)] Waiting until timeout for monitored process [2023-12-25 06:06:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:03,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 06:06:03,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-25 06:06:03,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:04,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631907421] [2023-12-25 06:06:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631907421] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91055960] [2023-12-25 06:06:04,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:04,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:04,363 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-12-25 06:06:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:04,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-25 06:06:04,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 569 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2023-12-25 06:06:04,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [91055960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:05,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 25 [2023-12-25 06:06:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492097288] [2023-12-25 06:06:05,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:05,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:06:05,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:05,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:06:05,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:06:05,559 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-25 06:06:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:06,367 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2023-12-25 06:06:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:06:06,367 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) Word has length 142 [2023-12-25 06:06:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:06,370 INFO L225 Difference]: With dead ends: 76 [2023-12-25 06:06:06,370 INFO L226 Difference]: Without dead ends: 72 [2023-12-25 06:06:06,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=2019, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 06:06:06,371 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 82 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:06,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 893 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:06:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-25 06:06:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-25 06:06:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-25 06:06:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-12-25 06:06:06,377 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 142 [2023-12-25 06:06:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:06,377 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-12-25 06:06:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-25 06:06:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-12-25 06:06:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 06:06:06,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:06,378 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:06,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:06,589 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 (44)] Ended with exit code 0 [2023-12-25 06:06:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,44 /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 [2023-12-25 06:06:06,785 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:06,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1595434866, now seen corresponding path program 20 times [2023-12-25 06:06:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062565587] [2023-12-25 06:06:06,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:06,785 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 [2023-12-25 06:06:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:06,786 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-25 06:06:06,788 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 (46)] Waiting until timeout for monitored process [2023-12-25 06:06:06,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:06,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:06,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-25 06:06:06,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-25 06:06:07,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:08,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062565587] [2023-12-25 06:06:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062565587] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1148209216] [2023-12-25 06:06:08,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:08,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:08,092 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:08,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2023-12-25 06:06:08,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:08,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:08,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-25 06:06:08,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-25 06:06:08,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1148209216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:09,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2023-12-25 06:06:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520655921] [2023-12-25 06:06:09,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:06:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:06:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:06:09,331 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-25 06:06:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:10,072 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2023-12-25 06:06:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:06:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2023-12-25 06:06:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:10,089 INFO L225 Difference]: With dead ends: 79 [2023-12-25 06:06:10,089 INFO L226 Difference]: Without dead ends: 75 [2023-12-25 06:06:10,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 06:06:10,091 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 44 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:10,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 978 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:06:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-25 06:06:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-25 06:06:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-25 06:06:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2023-12-25 06:06:10,094 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 149 [2023-12-25 06:06:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:10,094 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2023-12-25 06:06:10,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-25 06:06:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2023-12-25 06:06:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-25 06:06:10,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:10,095 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:10,101 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 (46)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:10,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /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=3,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:10,501 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:10,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -638433358, now seen corresponding path program 21 times [2023-12-25 06:06:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472458494] [2023-12-25 06:06:10,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:10,502 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 [2023-12-25 06:06:10,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:10,503 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-25 06:06:10,545 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 (48)] Waiting until timeout for monitored process [2023-12-25 06:06:10,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-25 06:06:10,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:10,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 06:06:10,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 13 proven. 679 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2023-12-25 06:06:11,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:12,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472458494] [2023-12-25 06:06:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472458494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1592365136] [2023-12-25 06:06:12,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:12,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:12,095 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:12,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2023-12-25 06:06:12,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-25 06:06:12,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:12,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 06:06:12,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-25 06:06:12,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:13,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1592365136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:13,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 27 [2023-12-25 06:06:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013007168] [2023-12-25 06:06:13,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 06:06:13,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 06:06:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:06:13,490 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-25 06:06:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:14,313 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2023-12-25 06:06:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:06:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) Word has length 156 [2023-12-25 06:06:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:14,314 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:06:14,314 INFO L226 Difference]: Without dead ends: 78 [2023-12-25 06:06:14,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=2393, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 06:06:14,316 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 90 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:14,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1069 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:06:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-25 06:06:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-25 06:06:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (24), 23 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-25 06:06:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2023-12-25 06:06:14,318 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 156 [2023-12-25 06:06:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:14,319 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2023-12-25 06:06:14,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-25 06:06:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2023-12-25 06:06:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-25 06:06:14,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:14,320 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:14,330 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 (48)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:14,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2023-12-25 06:06:14,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /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=3,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:14,726 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:14,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash 613187312, now seen corresponding path program 22 times [2023-12-25 06:06:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664377347] [2023-12-25 06:06:14,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:14,726 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 [2023-12-25 06:06:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:14,736 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-25 06:06:14,737 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 (50)] Waiting until timeout for monitored process [2023-12-25 06:06:14,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:14,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:14,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 06:06:14,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-25 06:06:15,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:16,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:16,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664377347] [2023-12-25 06:06:16,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664377347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:16,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1720510805] [2023-12-25 06:06:16,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:16,179 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:16,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:16,180 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:16,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2023-12-25 06:06:16,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:16,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:16,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-25 06:06:16,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 758 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2023-12-25 06:06:16,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1720510805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:17,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:17,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 28 [2023-12-25 06:06:17,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571952054] [2023-12-25 06:06:17,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:06:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:06:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:06:17,504 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 28 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-25 06:06:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:18,391 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2023-12-25 06:06:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:06:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) Word has length 163 [2023-12-25 06:06:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:18,396 INFO L225 Difference]: With dead ends: 85 [2023-12-25 06:06:18,396 INFO L226 Difference]: Without dead ends: 81 [2023-12-25 06:06:18,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 06:06:18,397 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:18,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1166 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:06:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-25 06:06:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-25 06:06:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-25 06:06:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2023-12-25 06:06:18,401 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 163 [2023-12-25 06:06:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:18,402 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2023-12-25 06:06:18,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-25 06:06:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2023-12-25 06:06:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-25 06:06:18,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:18,403 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:18,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2023-12-25 06:06:18,613 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 (50)] Ended with exit code 0 [2023-12-25 06:06:18,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,50 /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 [2023-12-25 06:06:18,803 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:18,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash -588034636, now seen corresponding path program 23 times [2023-12-25 06:06:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303492660] [2023-12-25 06:06:18,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:18,804 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 [2023-12-25 06:06:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:18,806 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-25 06:06:18,807 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 (52)] Waiting until timeout for monitored process [2023-12-25 06:06:19,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-25 06:06:19,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:19,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-25 06:06:19,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 865 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2023-12-25 06:06:19,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:20,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303492660] [2023-12-25 06:06:20,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303492660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1085661952] [2023-12-25 06:06:20,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:20,597 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:20,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:20,598 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:20,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2023-12-25 06:06:21,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-25 06:06:21,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:21,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-25 06:06:21,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 37 proven. 832 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2023-12-25 06:06:21,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1085661952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:22,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 30 [2023-12-25 06:06:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827294501] [2023-12-25 06:06:22,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 06:06:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 06:06:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:06:22,194 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (42), 24 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-25 06:06:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:23,191 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2023-12-25 06:06:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:06:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (42), 24 states have call predecessors, (42), 3 states have call successors, (42) Word has length 170 [2023-12-25 06:06:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:23,193 INFO L225 Difference]: With dead ends: 88 [2023-12-25 06:06:23,193 INFO L226 Difference]: Without dead ends: 84 [2023-12-25 06:06:23,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=309, Invalid=2883, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 06:06:23,194 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:23,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1261 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:06:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-25 06:06:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-25 06:06:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-25 06:06:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2023-12-25 06:06:23,197 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 170 [2023-12-25 06:06:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:23,197 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2023-12-25 06:06:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (42), 24 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-25 06:06:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2023-12-25 06:06:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-25 06:06:23,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:23,198 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:23,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:23,410 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 (52)] Ended with exit code 0 [2023-12-25 06:06:23,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,52 /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 [2023-12-25 06:06:23,604 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:23,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1078059886, now seen corresponding path program 24 times [2023-12-25 06:06:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:23,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545789925] [2023-12-25 06:06:23,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:06:23,604 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 [2023-12-25 06:06:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:23,606 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-25 06:06:23,619 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 (54)] Waiting until timeout for monitored process [2023-12-25 06:06:23,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-25 06:06:23,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:24,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-25 06:06:24,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 16 proven. 883 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2023-12-25 06:06:24,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:25,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545789925] [2023-12-25 06:06:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545789925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113236408] [2023-12-25 06:06:25,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:06:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:25,444 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:25,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2023-12-25 06:06:26,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-25 06:06:26,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:26,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 06:06:26,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-12-25 06:06:26,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113236408] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:27,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 30 [2023-12-25 06:06:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505562776] [2023-12-25 06:06:27,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 06:06:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 06:06:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:06:27,129 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-25 06:06:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:28,137 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-12-25 06:06:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:06:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) Word has length 177 [2023-12-25 06:06:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:28,138 INFO L225 Difference]: With dead ends: 91 [2023-12-25 06:06:28,138 INFO L226 Difference]: Without dead ends: 87 [2023-12-25 06:06:28,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=292, Invalid=3014, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:06:28,139 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:28,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1363 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:06:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-25 06:06:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-25 06:06:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-25 06:06:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2023-12-25 06:06:28,142 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 177 [2023-12-25 06:06:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2023-12-25 06:06:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-25 06:06:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2023-12-25 06:06:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-25 06:06:28,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:28,143 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:28,149 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 (54)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:28,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2023-12-25 06:06:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /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=3,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:28,549 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:28,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 806876854, now seen corresponding path program 25 times [2023-12-25 06:06:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878652729] [2023-12-25 06:06:28,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:28,550 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 [2023-12-25 06:06:28,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:28,551 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-25 06:06:28,553 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 (56)] Waiting until timeout for monitored process [2023-12-25 06:06:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:28,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-25 06:06:28,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-12-25 06:06:29,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:30,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878652729] [2023-12-25 06:06:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878652729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807480336] [2023-12-25 06:06:30,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:30,221 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:30,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2023-12-25 06:06:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:30,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-25 06:06:30,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 974 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-12-25 06:06:30,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [807480336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:31,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:31,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 31 [2023-12-25 06:06:31,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567556221] [2023-12-25 06:06:31,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:06:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:06:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 06:06:31,734 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-25 06:06:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:32,806 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2023-12-25 06:06:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:06:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) Word has length 184 [2023-12-25 06:06:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:32,808 INFO L225 Difference]: With dead ends: 94 [2023-12-25 06:06:32,808 INFO L226 Difference]: Without dead ends: 90 [2023-12-25 06:06:32,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=3237, Unknown=0, NotChecked=0, Total=3540 [2023-12-25 06:06:32,810 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 54 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:32,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1472 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:06:32,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-25 06:06:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-25 06:06:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 61 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (28), 27 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-25 06:06:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2023-12-25 06:06:32,814 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 184 [2023-12-25 06:06:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:32,814 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2023-12-25 06:06:32,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-25 06:06:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2023-12-25 06:06:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-25 06:06:32,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:32,816 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:32,839 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 (56)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:33,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /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=3,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:33,224 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:33,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1851176172, now seen corresponding path program 26 times [2023-12-25 06:06:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159441738] [2023-12-25 06:06:33,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:33,225 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 [2023-12-25 06:06:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:33,226 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2023-12-25 06:06:33,227 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 (58)] Waiting until timeout for monitored process [2023-12-25 06:06:33,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:33,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:33,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-25 06:06:33,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-25 06:06:34,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:34,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159441738] [2023-12-25 06:06:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159441738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [264066923] [2023-12-25 06:06:34,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:34,997 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:34,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2023-12-25 06:06:35,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:35,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:35,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-25 06:06:35,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-25 06:06:35,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [264066923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:36,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2023-12-25 06:06:36,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819556814] [2023-12-25 06:06:36,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:36,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:06:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:06:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 06:06:36,523 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-25 06:06:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:37,624 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2023-12-25 06:06:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:06:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2023-12-25 06:06:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:37,626 INFO L225 Difference]: With dead ends: 97 [2023-12-25 06:06:37,626 INFO L226 Difference]: Without dead ends: 93 [2023-12-25 06:06:37,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3376, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 06:06:37,628 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 56 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:37,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1578 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:06:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-25 06:06:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-25 06:06:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 63 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (29), 28 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-25 06:06:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2023-12-25 06:06:37,631 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 191 [2023-12-25 06:06:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:37,631 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2023-12-25 06:06:37,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-25 06:06:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2023-12-25 06:06:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-25 06:06:37,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:37,633 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:37,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Ended with exit code 0 [2023-12-25 06:06:37,847 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 (58)] Ended with exit code 0 [2023-12-25 06:06:38,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,58 /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 [2023-12-25 06:06:38,041 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:38,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1756504760, now seen corresponding path program 27 times [2023-12-25 06:06:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:38,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324552267] [2023-12-25 06:06:38,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:38,041 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 [2023-12-25 06:06:38,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:38,042 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2023-12-25 06:06:38,044 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 (60)] Waiting until timeout for monitored process [2023-12-25 06:06:38,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2023-12-25 06:06:38,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:38,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 06:06:38,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 19 proven. 1114 refuted. 0 times theorem prover too weak. 1432 trivial. 0 not checked. [2023-12-25 06:06:39,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:40,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324552267] [2023-12-25 06:06:40,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324552267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174973639] [2023-12-25 06:06:40,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:40,203 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:40,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:40,204 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:40,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2023-12-25 06:06:40,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2023-12-25 06:06:40,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:40,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-25 06:06:40,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-12-25 06:06:41,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [174973639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:42,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 33 [2023-12-25 06:06:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12780535] [2023-12-25 06:06:42,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:42,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:06:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:06:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:06:42,041 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 33 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-25 06:06:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:43,256 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2023-12-25 06:06:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-25 06:06:43,257 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) Word has length 198 [2023-12-25 06:06:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:43,258 INFO L225 Difference]: With dead ends: 100 [2023-12-25 06:06:43,258 INFO L226 Difference]: Without dead ends: 96 [2023-12-25 06:06:43,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=325, Invalid=3707, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 06:06:43,259 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 58 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:43,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1696 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:06:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-25 06:06:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-25 06:06:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.015625) internal successors, (65), 65 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 29 states have return successors, (30), 29 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-25 06:06:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2023-12-25 06:06:43,262 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 198 [2023-12-25 06:06:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:43,263 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2023-12-25 06:06:43,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-25 06:06:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2023-12-25 06:06:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 06:06:43,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:43,264 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:43,272 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 (60)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:43,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Ended with exit code 0 [2023-12-25 06:06:43,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /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=3,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:43,672 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash -242674838, now seen corresponding path program 28 times [2023-12-25 06:06:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334160872] [2023-12-25 06:06:43,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:43,673 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 [2023-12-25 06:06:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:43,674 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2023-12-25 06:06:43,675 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 (62)] Waiting until timeout for monitored process [2023-12-25 06:06:43,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:43,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:43,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 06:06:43,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-12-25 06:06:44,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:45,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334160872] [2023-12-25 06:06:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334160872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380059468] [2023-12-25 06:06:45,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:45,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:45,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:45,626 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:45,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2023-12-25 06:06:46,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:46,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:46,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-25 06:06:46,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1217 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2023-12-25 06:06:46,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:47,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380059468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:47,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:47,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 34 [2023-12-25 06:06:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985388673] [2023-12-25 06:06:47,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 06:06:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 06:06:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:06:47,381 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 34 states, 33 states have (on average 2.0) internal successors, (66), 34 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-25 06:06:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:48,664 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-12-25 06:06:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 06:06:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.0) internal successors, (66), 34 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) Word has length 205 [2023-12-25 06:06:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:48,666 INFO L225 Difference]: With dead ends: 103 [2023-12-25 06:06:48,666 INFO L226 Difference]: Without dead ends: 99 [2023-12-25 06:06:48,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=336, Invalid=3954, Unknown=0, NotChecked=0, Total=4290 [2023-12-25 06:06:48,667 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:48,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1814 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:06:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-25 06:06:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-25 06:06:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (31), 30 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-25 06:06:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2023-12-25 06:06:48,670 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 205 [2023-12-25 06:06:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:48,670 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2023-12-25 06:06:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.0) internal successors, (66), 34 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-25 06:06:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2023-12-25 06:06:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-25 06:06:48,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:48,671 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:48,678 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 (62)] Ended with exit code 0 [2023-12-25 06:06:48,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:49,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /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=3,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:49,078 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:49,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1651749306, now seen corresponding path program 29 times [2023-12-25 06:06:49,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:49,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187227882] [2023-12-25 06:06:49,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:49,079 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 [2023-12-25 06:06:49,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:49,080 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2023-12-25 06:06:49,082 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 (64)] Waiting until timeout for monitored process [2023-12-25 06:06:49,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2023-12-25 06:06:49,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:49,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-25 06:06:49,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 25 proven. 1357 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2023-12-25 06:06:50,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:51,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187227882] [2023-12-25 06:06:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187227882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1263413086] [2023-12-25 06:06:51,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:51,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:51,495 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:51,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2023-12-25 06:06:52,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2023-12-25 06:06:52,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:52,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-25 06:06:52,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 1654 trivial. 0 not checked. [2023-12-25 06:06:52,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1263413086] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:53,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 36 [2023-12-25 06:06:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847806447] [2023-12-25 06:06:53,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:53,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 06:06:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 06:06:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:06:53,441 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 30 states have return successors, (55), 30 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-25 06:06:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:54,805 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2023-12-25 06:06:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 06:06:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 30 states have return successors, (55), 30 states have call predecessors, (55), 3 states have call successors, (55) Word has length 212 [2023-12-25 06:06:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:54,806 INFO L225 Difference]: With dead ends: 106 [2023-12-25 06:06:54,806 INFO L226 Difference]: Without dead ends: 102 [2023-12-25 06:06:54,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=381, Invalid=4311, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 06:06:54,807 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 122 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:54,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1934 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:06:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-25 06:06:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-25 06:06:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 69 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (32), 31 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-25 06:06:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2023-12-25 06:06:54,810 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 212 [2023-12-25 06:06:54,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:54,810 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2023-12-25 06:06:54,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 30 states have return successors, (55), 30 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-25 06:06:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2023-12-25 06:06:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-25 06:06:54,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:54,811 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:54,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2023-12-25 06:06:55,027 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 (64)] Ended with exit code 0 [2023-12-25 06:06:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,64 /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 [2023-12-25 06:06:55,219 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:55,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1187569944, now seen corresponding path program 30 times [2023-12-25 06:06:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:55,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012425951] [2023-12-25 06:06:55,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:06:55,220 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 [2023-12-25 06:06:55,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:55,238 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2023-12-25 06:06:55,241 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 (66)] Waiting until timeout for monitored process [2023-12-25 06:06:55,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2023-12-25 06:06:55,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:55,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-25 06:06:55,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 22 proven. 1372 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2023-12-25 06:06:56,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:57,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012425951] [2023-12-25 06:06:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012425951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409579714] [2023-12-25 06:06:57,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:06:57,684 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:06:57,685 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:06:57,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2023-12-25 06:06:58,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2023-12-25 06:06:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:58,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-25 06:06:58,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-12-25 06:06:58,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1409579714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:06:59,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 36 [2023-12-25 06:06:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339681169] [2023-12-25 06:06:59,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 06:06:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 06:06:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:06:59,745 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-25 06:07:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:01,198 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2023-12-25 06:07:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 06:07:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) Word has length 219 [2023-12-25 06:07:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:01,199 INFO L225 Difference]: With dead ends: 109 [2023-12-25 06:07:01,199 INFO L226 Difference]: Without dead ends: 105 [2023-12-25 06:07:01,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 414 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=358, Invalid=4472, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 06:07:01,200 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 64 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:01,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 2062 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:07:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-25 06:07:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-25 06:07:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-25 06:07:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2023-12-25 06:07:01,203 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 219 [2023-12-25 06:07:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:01,203 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2023-12-25 06:07:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.0) internal successors, (70), 36 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-25 06:07:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2023-12-25 06:07:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-25 06:07:01,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:01,204 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:01,214 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 (66)] Ended with exit code 0 [2023-12-25 06:07:01,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Ended with exit code 0 [2023-12-25 06:07:01,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /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=3,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:01,605 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:01,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1720810564, now seen corresponding path program 31 times [2023-12-25 06:07:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152290171] [2023-12-25 06:07:01,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:01,606 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 [2023-12-25 06:07:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:01,607 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2023-12-25 06:07:01,608 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 (68)] Waiting until timeout for monitored process [2023-12-25 06:07:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:01,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-25 06:07:01,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-12-25 06:07:02,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:03,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:03,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152290171] [2023-12-25 06:07:03,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152290171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:03,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767383726] [2023-12-25 06:07:03,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:03,794 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:03,795 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:03,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2023-12-25 06:07:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:04,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-25 06:07:04,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1487 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2023-12-25 06:07:04,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1767383726] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:05,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 37 [2023-12-25 06:07:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963974306] [2023-12-25 06:07:05,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:07:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:07:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:07:05,707 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-25 06:07:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:07,196 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2023-12-25 06:07:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-25 06:07:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) Word has length 226 [2023-12-25 06:07:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:07,197 INFO L225 Difference]: With dead ends: 112 [2023-12-25 06:07:07,197 INFO L226 Difference]: Without dead ends: 108 [2023-12-25 06:07:07,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=369, Invalid=4743, Unknown=0, NotChecked=0, Total=5112 [2023-12-25 06:07:07,199 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 130 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 2189 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:07:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-25 06:07:07,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-25 06:07:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 73 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 33 states have return successors, (34), 33 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-25 06:07:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2023-12-25 06:07:07,202 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 226 [2023-12-25 06:07:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:07,202 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2023-12-25 06:07:07,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-25 06:07:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2023-12-25 06:07:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-25 06:07:07,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:07,203 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:07,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (69)] Ended with exit code 0 [2023-12-25 06:07:07,422 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 (68)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,68 /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 [2023-12-25 06:07:07,613 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:07,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2023819418, now seen corresponding path program 32 times [2023-12-25 06:07:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918133779] [2023-12-25 06:07:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:07,614 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 [2023-12-25 06:07:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:07,620 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2023-12-25 06:07:07,622 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 (70)] Waiting until timeout for monitored process [2023-12-25 06:07:07,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:07,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:07,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-25 06:07:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-25 06:07:08,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:09,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918133779] [2023-12-25 06:07:09,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918133779] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1161090123] [2023-12-25 06:07:09,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:09,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:09,887 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:09,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (71)] Waiting until timeout for monitored process [2023-12-25 06:07:10,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:10,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:10,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-25 06:07:10,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-25 06:07:10,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1161090123] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:11,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2023-12-25 06:07:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762428103] [2023-12-25 06:07:11,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:11,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:07:11,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:07:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:07:11,856 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 33 states have return successors, (33), 33 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-25 06:07:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:13,344 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-25 06:07:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-25 06:07:13,344 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 33 states have return successors, (33), 33 states have call predecessors, (33), 2 states have call successors, (33) Word has length 233 [2023-12-25 06:07:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:13,345 INFO L225 Difference]: With dead ends: 115 [2023-12-25 06:07:13,345 INFO L226 Difference]: Without dead ends: 111 [2023-12-25 06:07:13,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 441 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=4912, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 06:07:13,347 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 68 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:13,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2322 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:07:13,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-25 06:07:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-12-25 06:07:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 75 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (35), 34 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-25 06:07:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2023-12-25 06:07:13,351 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 233 [2023-12-25 06:07:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:13,351 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2023-12-25 06:07:13,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 33 states have return successors, (33), 33 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-25 06:07:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2023-12-25 06:07:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-25 06:07:13,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:13,352 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:13,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (71)] Ended with exit code 0 [2023-12-25 06:07:13,570 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 (70)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,70 /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 [2023-12-25 06:07:13,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2079033154, now seen corresponding path program 33 times [2023-12-25 06:07:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634351135] [2023-12-25 06:07:13,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:07:13,762 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 [2023-12-25 06:07:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:13,763 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2023-12-25 06:07:13,764 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 (72)] Waiting until timeout for monitored process [2023-12-25 06:07:14,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2023-12-25 06:07:14,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:14,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-25 06:07:14,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 25 proven. 1657 refuted. 0 times theorem prover too weak. 2146 trivial. 0 not checked. [2023-12-25 06:07:15,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:16,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634351135] [2023-12-25 06:07:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634351135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582237898] [2023-12-25 06:07:16,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:07:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:16,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:16,508 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:16,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (73)] Waiting until timeout for monitored process [2023-12-25 06:07:17,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2023-12-25 06:07:17,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:17,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-25 06:07:17,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-12-25 06:07:17,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1582237898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:18,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 39 [2023-12-25 06:07:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044030445] [2023-12-25 06:07:18,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-25 06:07:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-25 06:07:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1568, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:07:18,856 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 39 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-25 06:07:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:20,547 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2023-12-25 06:07:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-25 06:07:20,548 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) Word has length 240 [2023-12-25 06:07:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:20,549 INFO L225 Difference]: With dead ends: 118 [2023-12-25 06:07:20,549 INFO L226 Difference]: Without dead ends: 114 [2023-12-25 06:07:20,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=391, Invalid=5309, Unknown=0, NotChecked=0, Total=5700 [2023-12-25 06:07:20,550 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 138 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:20,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2461 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:07:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-25 06:07:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-25 06:07:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 76 states have (on average 1.013157894736842) internal successors, (77), 77 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 35 states have return successors, (36), 35 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-25 06:07:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2023-12-25 06:07:20,552 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 240 [2023-12-25 06:07:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:20,553 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2023-12-25 06:07:20,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-25 06:07:20,553 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2023-12-25 06:07:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-25 06:07:20,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:20,554 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:20,564 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 (72)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:20,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (73)] Ended with exit code 0 [2023-12-25 06:07:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /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=3,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:20,962 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:20,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 379501796, now seen corresponding path program 34 times [2023-12-25 06:07:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:20,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835380240] [2023-12-25 06:07:20,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:20,963 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 [2023-12-25 06:07:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:20,964 INFO L229 MonitoredProcess]: Starting monitored process 74 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) [2023-12-25 06:07:20,975 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 (74)] Waiting until timeout for monitored process [2023-12-25 06:07:21,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:21,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:21,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-25 06:07:21,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-12-25 06:07:22,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:23,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:23,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835380240] [2023-12-25 06:07:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835380240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:23,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1215346190] [2023-12-25 06:07:23,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:23,354 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:23,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:23,355 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:23,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2023-12-25 06:07:24,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:24,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:24,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-25 06:07:24,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1784 refuted. 0 times theorem prover too weak. 2279 trivial. 0 not checked. [2023-12-25 06:07:24,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1215346190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:25,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 40 [2023-12-25 06:07:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407454221] [2023-12-25 06:07:25,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:07:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:07:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:07:25,510 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 40 states, 39 states have (on average 2.0) internal successors, (78), 40 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-25 06:07:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:27,300 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2023-12-25 06:07:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-25 06:07:27,300 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.0) internal successors, (78), 40 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) Word has length 247 [2023-12-25 06:07:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:27,301 INFO L225 Difference]: With dead ends: 121 [2023-12-25 06:07:27,301 INFO L226 Difference]: Without dead ends: 117 [2023-12-25 06:07:27,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=5604, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 06:07:27,303 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 142 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:27,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2603 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:07:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-25 06:07:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-25 06:07:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 36 states have return successors, (37), 36 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-25 06:07:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2023-12-25 06:07:27,310 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 247 [2023-12-25 06:07:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:27,310 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2023-12-25 06:07:27,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.0) internal successors, (78), 40 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-25 06:07:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2023-12-25 06:07:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-25 06:07:27,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:27,312 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:27,321 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 (74)] Ended with exit code 0 [2023-12-25 06:07:27,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (75)] Ended with exit code 0 [2023-12-25 06:07:27,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /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=3,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:27,712 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:27,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash -315133760, now seen corresponding path program 35 times [2023-12-25 06:07:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147065165] [2023-12-25 06:07:27,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:27,713 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 [2023-12-25 06:07:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:27,714 INFO L229 MonitoredProcess]: Starting monitored process 76 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) [2023-12-25 06:07:27,715 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 (76)] Waiting until timeout for monitored process [2023-12-25 06:07:28,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2023-12-25 06:07:28,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:28,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-25 06:07:28,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-12-25 06:07:29,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:30,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:30,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147065165] [2023-12-25 06:07:30,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147065165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2060749150] [2023-12-25 06:07:30,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:30,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:30,677 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:30,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2023-12-25 06:07:31,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2023-12-25 06:07:31,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:31,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-25 06:07:31,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1889 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2023-12-25 06:07:32,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2060749150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:33,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41] total 41 [2023-12-25 06:07:33,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121903358] [2023-12-25 06:07:33,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:33,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 06:07:33,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 06:07:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:07:33,179 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 41 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-25 06:07:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:35,046 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2023-12-25 06:07:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-25 06:07:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) Word has length 254 [2023-12-25 06:07:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:35,056 INFO L225 Difference]: With dead ends: 124 [2023-12-25 06:07:35,056 INFO L226 Difference]: Without dead ends: 120 [2023-12-25 06:07:35,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=413, Invalid=5907, Unknown=0, NotChecked=0, Total=6320 [2023-12-25 06:07:35,057 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 146 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:35,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2749 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:07:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-25 06:07:35,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-25 06:07:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.0125) internal successors, (81), 81 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 37 states have return successors, (38), 37 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-25 06:07:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2023-12-25 06:07:35,060 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 254 [2023-12-25 06:07:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:35,061 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2023-12-25 06:07:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-25 06:07:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2023-12-25 06:07:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-25 06:07:35,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:35,062 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:35,069 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 (76)] Ended with exit code 0 [2023-12-25 06:07:35,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (77)] Ended with exit code 0 [2023-12-25 06:07:35,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /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=3,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:35,469 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:35,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1077186402, now seen corresponding path program 36 times [2023-12-25 06:07:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472990034] [2023-12-25 06:07:35,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:35,470 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 [2023-12-25 06:07:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:35,471 INFO L229 MonitoredProcess]: Starting monitored process 78 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) [2023-12-25 06:07:35,472 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 (78)] Waiting until timeout for monitored process [2023-12-25 06:07:36,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-12-25 06:07:36,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:36,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-25 06:07:36,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 28 proven. 1969 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2023-12-25 06:07:37,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:38,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:38,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472990034] [2023-12-25 06:07:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472990034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:38,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045902238] [2023-12-25 06:07:38,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:38,572 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:38,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:38,573 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:38,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2023-12-25 06:07:39,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-12-25 06:07:39,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:39,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-25 06:07:39,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2023-12-25 06:07:39,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2045902238] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:41,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:41,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 42 [2023-12-25 06:07:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601247647] [2023-12-25 06:07:41,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:41,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 06:07:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 06:07:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 06:07:41,107 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 42 states, 41 states have (on average 2.0) internal successors, (82), 42 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-25 06:07:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:43,028 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2023-12-25 06:07:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-25 06:07:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.0) internal successors, (82), 42 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) Word has length 261 [2023-12-25 06:07:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:43,029 INFO L225 Difference]: With dead ends: 127 [2023-12-25 06:07:43,029 INFO L226 Difference]: Without dead ends: 123 [2023-12-25 06:07:43,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=424, Invalid=6218, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:07:43,031 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 150 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:43,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 2899 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:07:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-25 06:07:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-25 06:07:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 83 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 38 states have return successors, (39), 38 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-25 06:07:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2023-12-25 06:07:43,033 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 261 [2023-12-25 06:07:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:43,034 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2023-12-25 06:07:43,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.0) internal successors, (82), 42 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-25 06:07:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2023-12-25 06:07:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-25 06:07:43,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:43,035 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:43,044 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 (78)] Ended with exit code 0 [2023-12-25 06:07:43,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (79)] Ended with exit code 0 [2023-12-25 06:07:43,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /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=3,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:43,443 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:43,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1309232066, now seen corresponding path program 37 times [2023-12-25 06:07:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864691551] [2023-12-25 06:07:43,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:43,444 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 [2023-12-25 06:07:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:43,447 INFO L229 MonitoredProcess]: Starting monitored process 80 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) [2023-12-25 06:07:43,462 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 (80)] Waiting until timeout for monitored process [2023-12-25 06:07:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:43,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-25 06:07:43,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-12-25 06:07:44,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:46,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:46,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864691551] [2023-12-25 06:07:46,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864691551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:46,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [292674165] [2023-12-25 06:07:46,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:46,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:46,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:46,077 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:46,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2023-12-25 06:07:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:46,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-25 06:07:46,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2108 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2023-12-25 06:07:47,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:48,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [292674165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:48,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43] total 43 [2023-12-25 06:07:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395446616] [2023-12-25 06:07:48,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 06:07:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 06:07:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1900, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 06:07:48,379 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 43 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-25 06:07:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:50,430 INFO L93 Difference]: Finished difference Result 130 states and 131 transitions. [2023-12-25 06:07:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-25 06:07:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) Word has length 268 [2023-12-25 06:07:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:50,432 INFO L225 Difference]: With dead ends: 130 [2023-12-25 06:07:50,432 INFO L226 Difference]: Without dead ends: 126 [2023-12-25 06:07:50,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=435, Invalid=6537, Unknown=0, NotChecked=0, Total=6972 [2023-12-25 06:07:50,433 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 154 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 3053 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:07:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-25 06:07:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-25 06:07:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 85 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 39 states have return successors, (40), 39 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-25 06:07:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2023-12-25 06:07:50,436 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 268 [2023-12-25 06:07:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:50,436 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2023-12-25 06:07:50,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-25 06:07:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2023-12-25 06:07:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 06:07:50,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:50,439 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:50,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (81)] Ended with exit code 0 [2023-12-25 06:07:50,659 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 (80)] Ended with exit code 0 [2023-12-25 06:07:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,80 /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 [2023-12-25 06:07:50,847 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:50,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:50,847 INFO L85 PathProgramCache]: Analyzing trace with hash 570330848, now seen corresponding path program 38 times [2023-12-25 06:07:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035554813] [2023-12-25 06:07:50,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:50,847 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 [2023-12-25 06:07:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:50,848 INFO L229 MonitoredProcess]: Starting monitored process 82 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) [2023-12-25 06:07:50,857 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 (82)] Waiting until timeout for monitored process [2023-12-25 06:07:51,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:51,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:51,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-25 06:07:51,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-12-25 06:07:52,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:53,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035554813] [2023-12-25 06:07:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035554813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383707462] [2023-12-25 06:07:53,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:53,568 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:07:53,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:07:53,569 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:07:53,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (83)] Waiting until timeout for monitored process [2023-12-25 06:07:54,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:54,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:54,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-25 06:07:54,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-12-25 06:07:54,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [383707462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:07:55,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:55,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2023-12-25 06:07:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973124964] [2023-12-25 06:07:55,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:55,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 06:07:55,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 06:07:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1900, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 06:07:55,903 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 39 states have return successors, (39), 39 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-25 06:07:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:57,841 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2023-12-25 06:07:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-25 06:07:57,842 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 39 states have return successors, (39), 39 states have call predecessors, (39), 2 states have call successors, (39) Word has length 275 [2023-12-25 06:07:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:57,843 INFO L225 Difference]: With dead ends: 133 [2023-12-25 06:07:57,843 INFO L226 Difference]: Without dead ends: 129 [2023-12-25 06:07:57,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=404, Invalid=6736, Unknown=0, NotChecked=0, Total=7140 [2023-12-25 06:07:57,844 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 80 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:57,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 3210 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:07:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-25 06:07:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-12-25 06:07:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 87 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 40 states have return successors, (41), 40 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-25 06:07:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2023-12-25 06:07:57,846 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 275 [2023-12-25 06:07:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:57,847 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2023-12-25 06:07:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 39 states have return successors, (39), 39 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-25 06:07:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2023-12-25 06:07:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-25 06:07:57,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:57,848 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:57,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (83)] Ended with exit code 0 [2023-12-25 06:07:58,067 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 (82)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:58,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,82 /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 [2023-12-25 06:07:58,258 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:58,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:58,258 INFO L85 PathProgramCache]: Analyzing trace with hash 672917956, now seen corresponding path program 39 times [2023-12-25 06:07:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:58,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938137207] [2023-12-25 06:07:58,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:07:58,259 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 [2023-12-25 06:07:58,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:58,260 INFO L229 MonitoredProcess]: Starting monitored process 84 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) [2023-12-25 06:07:58,261 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 (84)] Waiting until timeout for monitored process [2023-12-25 06:07:59,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2023-12-25 06:07:59,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:59,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-25 06:07:59,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 31 proven. 2308 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2023-12-25 06:08:00,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:01,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938137207] [2023-12-25 06:08:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938137207] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1714321275] [2023-12-25 06:08:01,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:08:01,651 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:01,652 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:01,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2023-12-25 06:08:02,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2023-12-25 06:08:02,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:02,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-25 06:08:02,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-12-25 06:08:03,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:04,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1714321275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:04,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 45 [2023-12-25 06:08:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864415068] [2023-12-25 06:08:04,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:04,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 06:08:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:04,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 06:08:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 06:08:04,446 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-25 06:08:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:06,447 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2023-12-25 06:08:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-25 06:08:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) Word has length 282 [2023-12-25 06:08:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:06,448 INFO L225 Difference]: With dead ends: 136 [2023-12-25 06:08:06,448 INFO L226 Difference]: Without dead ends: 132 [2023-12-25 06:08:06,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=457, Invalid=7199, Unknown=0, NotChecked=0, Total=7656 [2023-12-25 06:08:06,450 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 162 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:06,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 3373 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:08:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-25 06:08:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-25 06:08:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 89 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 41 states have return successors, (42), 41 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-25 06:08:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2023-12-25 06:08:06,453 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 282 [2023-12-25 06:08:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:06,454 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2023-12-25 06:08:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-25 06:08:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2023-12-25 06:08:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-25 06:08:06,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:06,456 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:06,466 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 (84)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:06,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (85)] Ended with exit code 0 [2023-12-25 06:08:06,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /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=3,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:06,865 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:06,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1148902238, now seen corresponding path program 40 times [2023-12-25 06:08:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98343890] [2023-12-25 06:08:06,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:08:06,866 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 [2023-12-25 06:08:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:06,867 INFO L229 MonitoredProcess]: Starting monitored process 86 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) [2023-12-25 06:08:06,869 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 (86)] Waiting until timeout for monitored process [2023-12-25 06:08:07,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:08:07,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:07,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-25 06:08:07,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2023-12-25 06:08:08,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:09,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:09,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98343890] [2023-12-25 06:08:09,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98343890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:09,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283540787] [2023-12-25 06:08:09,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:08:09,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:09,562 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:09,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (87)] Waiting until timeout for monitored process [2023-12-25 06:08:10,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:08:10,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:10,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-25 06:08:10,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2459 refuted. 0 times theorem prover too weak. 3161 trivial. 0 not checked. [2023-12-25 06:08:10,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:11,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [283540787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:11,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46] total 46 [2023-12-25 06:08:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251114498] [2023-12-25 06:08:11,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 06:08:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 06:08:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2170, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 06:08:11,981 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 46 states, 45 states have (on average 2.0) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-25 06:08:14,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:14,264 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2023-12-25 06:08:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-25 06:08:14,265 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.0) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) Word has length 289 [2023-12-25 06:08:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:14,265 INFO L225 Difference]: With dead ends: 139 [2023-12-25 06:08:14,265 INFO L226 Difference]: Without dead ends: 135 [2023-12-25 06:08:14,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=468, Invalid=7542, Unknown=0, NotChecked=0, Total=8010 [2023-12-25 06:08:14,267 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 84 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:14,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 3542 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:08:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-25 06:08:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-12-25 06:08:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 90 states have (on average 1.011111111111111) internal successors, (91), 91 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 42 states have return successors, (43), 42 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-25 06:08:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2023-12-25 06:08:14,269 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 289 [2023-12-25 06:08:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2023-12-25 06:08:14,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.0) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-25 06:08:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2023-12-25 06:08:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-25 06:08:14,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:14,271 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:14,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (87)] Ended with exit code 0 [2023-12-25 06:08:14,492 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 (86)] Ended with exit code 0 [2023-12-25 06:08:14,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,86 /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 [2023-12-25 06:08:14,681 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:14,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1600203462, now seen corresponding path program 41 times [2023-12-25 06:08:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982037015] [2023-12-25 06:08:14,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:08:14,682 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 [2023-12-25 06:08:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:14,683 INFO L229 MonitoredProcess]: Starting monitored process 88 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) [2023-12-25 06:08:14,684 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 (88)] Waiting until timeout for monitored process [2023-12-25 06:08:15,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2023-12-25 06:08:15,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:15,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-25 06:08:15,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 37 proven. 2659 refuted. 0 times theorem prover too weak. 3208 trivial. 0 not checked. [2023-12-25 06:08:16,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:18,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982037015] [2023-12-25 06:08:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982037015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [310216400] [2023-12-25 06:08:18,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:08:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:18,203 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:18,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2023-12-25 06:08:19,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2023-12-25 06:08:19,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:19,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-25 06:08:19,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2582 refuted. 0 times theorem prover too weak. 3322 trivial. 0 not checked. [2023-12-25 06:08:19,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [310216400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:20,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 48 [2023-12-25 06:08:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158366906] [2023-12-25 06:08:20,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-25 06:08:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-25 06:08:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2359, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 06:08:21,000 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 42 states have return successors, (79), 42 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-25 06:08:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:23,287 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2023-12-25 06:08:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-25 06:08:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 42 states have return successors, (79), 42 states have call predecessors, (79), 3 states have call successors, (79) Word has length 296 [2023-12-25 06:08:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:23,290 INFO L225 Difference]: With dead ends: 142 [2023-12-25 06:08:23,290 INFO L226 Difference]: Without dead ends: 138 [2023-12-25 06:08:23,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 556 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=525, Invalid=8031, Unknown=0, NotChecked=0, Total=8556 [2023-12-25 06:08:23,297 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 170 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:23,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 3712 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:08:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-25 06:08:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-12-25 06:08:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 93 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 43 states have return successors, (44), 43 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-25 06:08:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2023-12-25 06:08:23,301 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 296 [2023-12-25 06:08:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:23,302 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2023-12-25 06:08:23,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 42 states have return successors, (79), 42 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-25 06:08:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2023-12-25 06:08:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-25 06:08:23,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:23,303 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:23,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (89)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:23,521 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 (88)] Ended with exit code 0 [2023-12-25 06:08:23,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,88 /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 [2023-12-25 06:08:23,714 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:23,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1060662052, now seen corresponding path program 42 times [2023-12-25 06:08:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:23,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398374724] [2023-12-25 06:08:23,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:08:23,715 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 [2023-12-25 06:08:23,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:23,716 INFO L229 MonitoredProcess]: Starting monitored process 90 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) [2023-12-25 06:08:23,716 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 (90)] Waiting until timeout for monitored process [2023-12-25 06:08:24,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2023-12-25 06:08:24,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:24,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-25 06:08:24,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 34 proven. 2674 refuted. 0 times theorem prover too weak. 3487 trivial. 0 not checked. [2023-12-25 06:08:25,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:27,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398374724] [2023-12-25 06:08:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398374724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [321835036] [2023-12-25 06:08:27,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:08:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:27,057 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:27,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2023-12-25 06:08:28,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2023-12-25 06:08:28,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:28,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 06:08:28,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2023-12-25 06:08:28,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [321835036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:29,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 48 [2023-12-25 06:08:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249073199] [2023-12-25 06:08:29,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-25 06:08:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-25 06:08:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2360, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 06:08:29,807 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-25 06:08:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:31,962 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2023-12-25 06:08:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-25 06:08:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) Word has length 303 [2023-12-25 06:08:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:31,963 INFO L225 Difference]: With dead ends: 145 [2023-12-25 06:08:31,963 INFO L226 Difference]: Without dead ends: 141 [2023-12-25 06:08:31,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 570 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=490, Invalid=8252, Unknown=0, NotChecked=0, Total=8742 [2023-12-25 06:08:31,966 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 88 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:31,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 3886 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:08:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-25 06:08:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-12-25 06:08:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 95 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 44 states have return successors, (45), 44 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-25 06:08:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2023-12-25 06:08:31,969 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 303 [2023-12-25 06:08:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:31,969 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2023-12-25 06:08:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0) internal successors, (94), 48 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-25 06:08:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2023-12-25 06:08:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-25 06:08:31,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:31,970 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:31,990 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 (90)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:32,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (91)] Ended with exit code 0 [2023-12-25 06:08:32,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /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=3,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:32,384 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:32,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1809125688, now seen corresponding path program 43 times [2023-12-25 06:08:32,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:32,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937633558] [2023-12-25 06:08:32,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:08:32,385 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 [2023-12-25 06:08:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:32,386 INFO L229 MonitoredProcess]: Starting monitored process 92 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) [2023-12-25 06:08:32,386 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 (92)] Waiting until timeout for monitored process [2023-12-25 06:08:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:08:32,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-25 06:08:32,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-12-25 06:08:33,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:35,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937633558] [2023-12-25 06:08:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937633558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [718862007] [2023-12-25 06:08:35,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:08:35,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:35,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:35,267 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:35,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (93)] Waiting until timeout for monitored process [2023-12-25 06:08:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:08:36,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-25 06:08:36,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2837 refuted. 0 times theorem prover too weak. 3656 trivial. 0 not checked. [2023-12-25 06:08:36,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:37,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [718862007] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:37,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 49 [2023-12-25 06:08:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976157379] [2023-12-25 06:08:37,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:37,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-25 06:08:37,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-25 06:08:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 06:08:37,776 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 49 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 44 states have return successors, (45), 44 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-25 06:08:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:40,063 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2023-12-25 06:08:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 06:08:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 44 states have return successors, (45), 44 states have call predecessors, (45), 3 states have call successors, (45) Word has length 310 [2023-12-25 06:08:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:40,064 INFO L225 Difference]: With dead ends: 148 [2023-12-25 06:08:40,064 INFO L226 Difference]: Without dead ends: 144 [2023-12-25 06:08:40,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 583 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=501, Invalid=8619, Unknown=0, NotChecked=0, Total=9120 [2023-12-25 06:08:40,066 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 90 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:40,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 4064 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:08:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-25 06:08:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-25 06:08:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 97 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 45 states have return successors, (46), 45 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-25 06:08:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2023-12-25 06:08:40,076 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 310 [2023-12-25 06:08:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:40,076 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2023-12-25 06:08:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 44 states have return successors, (45), 44 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-25 06:08:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2023-12-25 06:08:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-25 06:08:40,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:40,078 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:40,089 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 (92)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:40,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (93)] Ended with exit code 0 [2023-12-25 06:08:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /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=3,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:40,487 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:40,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1721949018, now seen corresponding path program 44 times [2023-12-25 06:08:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:40,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745266338] [2023-12-25 06:08:40,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:08:40,487 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 [2023-12-25 06:08:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:40,488 INFO L229 MonitoredProcess]: Starting monitored process 94 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) [2023-12-25 06:08:40,490 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 (94)] Waiting until timeout for monitored process [2023-12-25 06:08:40,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:08:40,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:40,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-25 06:08:40,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2023-12-25 06:08:42,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:43,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745266338] [2023-12-25 06:08:43,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745266338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392632365] [2023-12-25 06:08:43,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:08:43,464 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:43,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:43,465 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:43,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (95)] Waiting until timeout for monitored process [2023-12-25 06:08:44,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:08:44,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:44,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-25 06:08:44,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2023-12-25 06:08:44,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1392632365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:45,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:45,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2023-12-25 06:08:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911782623] [2023-12-25 06:08:45,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-25 06:08:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-25 06:08:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 06:08:45,953 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 45 states have return successors, (45), 45 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-25 06:08:48,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:48,220 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2023-12-25 06:08:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 06:08:48,220 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 45 states have return successors, (45), 45 states have call predecessors, (45), 2 states have call successors, (45) Word has length 317 [2023-12-25 06:08:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:48,221 INFO L225 Difference]: With dead ends: 151 [2023-12-25 06:08:48,221 INFO L226 Difference]: Without dead ends: 147 [2023-12-25 06:08:48,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 597 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=464, Invalid=8848, Unknown=0, NotChecked=0, Total=9312 [2023-12-25 06:08:48,223 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 92 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:48,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 4242 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:08:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-25 06:08:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-12-25 06:08:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 98 states have (on average 1.010204081632653) internal successors, (99), 99 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (47), 46 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-25 06:08:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2023-12-25 06:08:48,226 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 317 [2023-12-25 06:08:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:48,226 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2023-12-25 06:08:48,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 45 states have return successors, (45), 45 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-25 06:08:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2023-12-25 06:08:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-25 06:08:48,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:48,228 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:48,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (95)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:48,443 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 (94)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:48,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,94 /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 [2023-12-25 06:08:48,636 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:48,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2099975626, now seen corresponding path program 45 times [2023-12-25 06:08:48,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:48,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445660385] [2023-12-25 06:08:48,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:08:48,637 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 [2023-12-25 06:08:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:48,638 INFO L229 MonitoredProcess]: Starting monitored process 96 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) [2023-12-25 06:08:48,638 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 (96)] Waiting until timeout for monitored process [2023-12-25 06:08:49,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2023-12-25 06:08:49,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:49,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 95 conjunts are in the unsatisfiable core [2023-12-25 06:08:49,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 37 proven. 3067 refuted. 0 times theorem prover too weak. 4006 trivial. 0 not checked. [2023-12-25 06:08:50,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:52,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445660385] [2023-12-25 06:08:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445660385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [354797047] [2023-12-25 06:08:52,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:08:52,327 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:08:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:08:52,328 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:08:52,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2023-12-25 06:08:53,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2023-12-25 06:08:53,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:53,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-25 06:08:53,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2023-12-25 06:08:53,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [354797047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:08:55,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 51 [2023-12-25 06:08:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902784043] [2023-12-25 06:08:55,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-25 06:08:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-25 06:08:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2660, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 06:08:55,245 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 51 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 46 states have return successors, (47), 46 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-25 06:08:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:57,954 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2023-12-25 06:08:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-25 06:08:57,954 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 46 states have return successors, (47), 46 states have call predecessors, (47), 3 states have call successors, (47) Word has length 324 [2023-12-25 06:08:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:57,955 INFO L225 Difference]: With dead ends: 154 [2023-12-25 06:08:57,955 INFO L226 Difference]: Without dead ends: 150 [2023-12-25 06:08:57,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 609 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=523, Invalid=9377, Unknown=0, NotChecked=0, Total=9900 [2023-12-25 06:08:57,956 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 94 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:57,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 4432 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 06:08:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-25 06:08:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-25 06:08:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 100 states have (on average 1.01) internal successors, (101), 101 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (48), 47 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-25 06:08:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2023-12-25 06:08:57,959 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 324 [2023-12-25 06:08:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:57,960 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2023-12-25 06:08:57,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 46 states have return successors, (47), 46 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-25 06:08:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2023-12-25 06:08:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-25 06:08:57,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:57,961 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:57,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (97)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:58,182 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 (96)] Ended with exit code 0 [2023-12-25 06:08:58,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,96 /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 [2023-12-25 06:08:58,373 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:58,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash -496316712, now seen corresponding path program 46 times [2023-12-25 06:08:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294901479] [2023-12-25 06:08:58,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:08:58,374 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 [2023-12-25 06:08:58,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:58,375 INFO L229 MonitoredProcess]: Starting monitored process 98 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) [2023-12-25 06:08:58,377 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 (98)] Waiting until timeout for monitored process [2023-12-25 06:08:58,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:08:58,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:58,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-25 06:08:58,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2023-12-25 06:09:00,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:01,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:01,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294901479] [2023-12-25 06:09:01,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294901479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:01,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1801891278] [2023-12-25 06:09:01,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:09:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:01,834 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:01,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (99)] Waiting until timeout for monitored process [2023-12-25 06:09:02,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:09:02,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:02,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-25 06:09:02,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3242 refuted. 0 times theorem prover too weak. 4187 trivial. 0 not checked. [2023-12-25 06:09:03,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1801891278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:04,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 52] total 52 [2023-12-25 06:09:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555621212] [2023-12-25 06:09:04,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 06:09:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 06:09:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2764, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:09:04,853 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand has 52 states, 51 states have (on average 2.0) internal successors, (102), 52 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 47 states have return successors, (48), 47 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-25 06:09:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:07,459 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2023-12-25 06:09:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 06:09:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.0) internal successors, (102), 52 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 47 states have return successors, (48), 47 states have call predecessors, (48), 3 states have call successors, (48) Word has length 331 [2023-12-25 06:09:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:07,460 INFO L225 Difference]: With dead ends: 157 [2023-12-25 06:09:07,460 INFO L226 Difference]: Without dead ends: 153 [2023-12-25 06:09:07,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 622 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=534, Invalid=9768, Unknown=0, NotChecked=0, Total=10302 [2023-12-25 06:09:07,461 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 96 mSDsluCounter, 4523 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4622 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:07,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4622 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 06:09:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-25 06:09:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-12-25 06:09:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 103 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 48 states have return successors, (49), 48 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-25 06:09:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2023-12-25 06:09:07,470 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 331 [2023-12-25 06:09:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2023-12-25 06:09:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.0) internal successors, (102), 52 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 47 states have return successors, (48), 47 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-25 06:09:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2023-12-25 06:09:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-25 06:09:07,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:07,472 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:07,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (99)] Ended with exit code 0 [2023-12-25 06:09:07,688 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 (98)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:07,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,98 /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 [2023-12-25 06:09:07,881 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:07,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1098088396, now seen corresponding path program 47 times [2023-12-25 06:09:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:07,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814934763] [2023-12-25 06:09:07,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:09:07,881 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 [2023-12-25 06:09:07,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:07,882 INFO L229 MonitoredProcess]: Starting monitored process 100 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) [2023-12-25 06:09:07,883 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 (100)] Waiting until timeout for monitored process [2023-12-25 06:09:09,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-12-25 06:09:09,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:09,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-25 06:09:09,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-12-25 06:09:10,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:11,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814934763] [2023-12-25 06:09:11,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814934763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1948194293] [2023-12-25 06:09:11,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:09:11,896 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:11,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:11,896 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:11,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (101)] Waiting until timeout for monitored process [2023-12-25 06:09:13,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-12-25 06:09:13,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:13,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-25 06:09:13,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-12-25 06:09:13,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:15,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1948194293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:15,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:15,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2023-12-25 06:09:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111435758] [2023-12-25 06:09:15,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:15,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 06:09:15,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 06:09:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2764, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:09:15,080 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 48 states have return successors, (48), 48 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-25 06:09:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:17,603 INFO L93 Difference]: Finished difference Result 160 states and 161 transitions. [2023-12-25 06:09:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 06:09:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 48 states have return successors, (48), 48 states have call predecessors, (48), 2 states have call successors, (48) Word has length 338 [2023-12-25 06:09:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:17,604 INFO L225 Difference]: With dead ends: 160 [2023-12-25 06:09:17,604 INFO L226 Difference]: Without dead ends: 156 [2023-12-25 06:09:17,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 636 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=494, Invalid=10012, Unknown=0, NotChecked=0, Total=10506 [2023-12-25 06:09:17,606 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 98 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:17,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 4812 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 06:09:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-25 06:09:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-12-25 06:09:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 105 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 49 states have return successors, (50), 49 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-25 06:09:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2023-12-25 06:09:17,613 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 338 [2023-12-25 06:09:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:17,613 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2023-12-25 06:09:17,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 48 states have return successors, (48), 48 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-25 06:09:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2023-12-25 06:09:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-25 06:09:17,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:17,615 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:17,623 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 (100)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:17,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (101)] Ended with exit code 0 [2023-12-25 06:09:18,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /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=3,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:18,023 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:18,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash -484602026, now seen corresponding path program 48 times [2023-12-25 06:09:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:18,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483450963] [2023-12-25 06:09:18,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:09:18,024 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 [2023-12-25 06:09:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:18,025 INFO L229 MonitoredProcess]: Starting monitored process 102 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) [2023-12-25 06:09:18,026 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 (102)] Waiting until timeout for monitored process [2023-12-25 06:09:19,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2023-12-25 06:09:19,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:19,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-25 06:09:19,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 40 proven. 3487 refuted. 0 times theorem prover too weak. 4561 trivial. 0 not checked. [2023-12-25 06:09:20,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:22,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483450963] [2023-12-25 06:09:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483450963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079853820] [2023-12-25 06:09:22,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:09:22,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:22,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:22,164 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:22,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (103)] Waiting until timeout for monitored process [2023-12-25 06:09:23,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2023-12-25 06:09:23,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:23,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-25 06:09:23,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2023-12-25 06:09:24,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:25,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1079853820] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:25,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:25,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 54 [2023-12-25 06:09:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483621595] [2023-12-25 06:09:25,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-25 06:09:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-25 06:09:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2978, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 06:09:25,433 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 54 states, 53 states have (on average 2.0) internal successors, (106), 54 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 49 states have return successors, (50), 49 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-25 06:09:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:28,275 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2023-12-25 06:09:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-25 06:09:28,276 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.0) internal successors, (106), 54 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 49 states have return successors, (50), 49 states have call predecessors, (50), 3 states have call successors, (50) Word has length 345 [2023-12-25 06:09:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:28,277 INFO L225 Difference]: With dead ends: 163 [2023-12-25 06:09:28,277 INFO L226 Difference]: Without dead ends: 159 [2023-12-25 06:09:28,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 648 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=556, Invalid=10574, Unknown=0, NotChecked=0, Total=11130 [2023-12-25 06:09:28,283 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 100 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 2865 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:28,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 5014 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2865 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 06:09:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-25 06:09:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-25 06:09:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.009433962264151) internal successors, (107), 107 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 50 states have return successors, (51), 50 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-25 06:09:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2023-12-25 06:09:28,286 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 345 [2023-12-25 06:09:28,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:28,286 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2023-12-25 06:09:28,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.0) internal successors, (106), 54 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 49 states have return successors, (50), 49 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-25 06:09:28,286 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2023-12-25 06:09:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-25 06:09:28,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:28,287 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:28,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (103)] Ended with exit code 0 [2023-12-25 06:09:28,504 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 (102)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,102 /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 [2023-12-25 06:09:28,696 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:28,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -764015410, now seen corresponding path program 49 times [2023-12-25 06:09:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992973207] [2023-12-25 06:09:28,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:09:28,696 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 [2023-12-25 06:09:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:28,697 INFO L229 MonitoredProcess]: Starting monitored process 104 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) [2023-12-25 06:09:28,698 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 (104)] Waiting until timeout for monitored process [2023-12-25 06:09:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:29,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-25 06:09:29,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-12-25 06:09:30,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:32,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992973207] [2023-12-25 06:09:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992973207] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1218060414] [2023-12-25 06:09:32,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:09:32,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:32,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:32,147 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:32,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (105)] Waiting until timeout for monitored process [2023-12-25 06:09:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:33,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 103 conjunts are in the unsatisfiable core [2023-12-25 06:09:33,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3674 refuted. 0 times theorem prover too weak. 4754 trivial. 0 not checked. [2023-12-25 06:09:33,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1218060414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:35,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 55] total 55 [2023-12-25 06:09:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525564269] [2023-12-25 06:09:35,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-25 06:09:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-25 06:09:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:09:35,068 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 55 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 50 states have return successors, (51), 50 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-25 06:09:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:38,166 INFO L93 Difference]: Finished difference Result 166 states and 167 transitions. [2023-12-25 06:09:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-25 06:09:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 50 states have return successors, (51), 50 states have call predecessors, (51), 3 states have call successors, (51) Word has length 352 [2023-12-25 06:09:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:38,167 INFO L225 Difference]: With dead ends: 166 [2023-12-25 06:09:38,167 INFO L226 Difference]: Without dead ends: 162 [2023-12-25 06:09:38,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 661 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=567, Invalid=10989, Unknown=0, NotChecked=0, Total=11556 [2023-12-25 06:09:38,169 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 202 mSDsluCounter, 5108 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 5213 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 06:09:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-25 06:09:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-25 06:09:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 109 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 51 states have return successors, (52), 51 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-25 06:09:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2023-12-25 06:09:38,172 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 352 [2023-12-25 06:09:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:38,172 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2023-12-25 06:09:38,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 50 states have return successors, (51), 50 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-25 06:09:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2023-12-25 06:09:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 06:09:38,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:38,173 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:38,196 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 (104)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:38,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (105)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /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=3,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:38,592 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:38,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1079590100, now seen corresponding path program 50 times [2023-12-25 06:09:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:38,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163916220] [2023-12-25 06:09:38,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:38,593 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 [2023-12-25 06:09:38,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:38,594 INFO L229 MonitoredProcess]: Starting monitored process 106 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) [2023-12-25 06:09:38,594 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 (106)] Waiting until timeout for monitored process [2023-12-25 06:09:39,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:39,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:39,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-25 06:09:39,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-12-25 06:09:40,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:42,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163916220] [2023-12-25 06:09:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163916220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2025032766] [2023-12-25 06:09:42,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:42,124 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:42,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (107)] Waiting until timeout for monitored process [2023-12-25 06:09:43,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:43,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:43,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-25 06:09:43,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-12-25 06:09:43,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2025032766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:45,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2023-12-25 06:09:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612789497] [2023-12-25 06:09:45,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:45,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-25 06:09:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-25 06:09:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:09:45,076 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 51 states have return successors, (51), 51 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-25 06:09:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:48,018 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2023-12-25 06:09:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-25 06:09:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 51 states have return successors, (51), 51 states have call predecessors, (51), 2 states have call successors, (51) Word has length 359 [2023-12-25 06:09:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:48,020 INFO L225 Difference]: With dead ends: 169 [2023-12-25 06:09:48,020 INFO L226 Difference]: Without dead ends: 165 [2023-12-25 06:09:48,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=524, Invalid=11248, Unknown=0, NotChecked=0, Total=11772 [2023-12-25 06:09:48,021 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 104 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 5418 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:48,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 5418 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3076 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 06:09:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-25 06:09:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-25 06:09:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 110 states have (on average 1.009090909090909) internal successors, (111), 111 states have internal predecessors, (111), 2 states have call successors, (2), 1 states have call predecessors, (2), 52 states have return successors, (53), 52 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-25 06:09:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2023-12-25 06:09:48,024 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 359 [2023-12-25 06:09:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:48,025 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2023-12-25 06:09:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 51 states have return successors, (51), 51 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-25 06:09:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2023-12-25 06:09:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-25 06:09:48,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:48,026 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:48,039 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 (106)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:48,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (107)] Ended with exit code 0 [2023-12-25 06:09:48,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /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=3,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:48,437 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:48,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:48,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1174707408, now seen corresponding path program 51 times [2023-12-25 06:09:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654035954] [2023-12-25 06:09:48,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:48,438 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 [2023-12-25 06:09:48,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:48,439 INFO L229 MonitoredProcess]: Starting monitored process 108 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) [2023-12-25 06:09:48,440 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 (108)] Waiting until timeout for monitored process [2023-12-25 06:09:49,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2023-12-25 06:09:49,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:49,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-25 06:09:49,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 43 proven. 3934 refuted. 0 times theorem prover too weak. 5152 trivial. 0 not checked. [2023-12-25 06:09:51,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:53,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654035954] [2023-12-25 06:09:53,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654035954] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119872211] [2023-12-25 06:09:53,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:53,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:09:53,068 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:09:53,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (109)] Waiting until timeout for monitored process [2023-12-25 06:09:54,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2023-12-25 06:09:54,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:54,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-25 06:09:54,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2023-12-25 06:09:55,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119872211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:09:56,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:56,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 57 [2023-12-25 06:09:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437215154] [2023-12-25 06:09:56,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:56,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-25 06:09:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-25 06:09:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3314, Unknown=0, NotChecked=0, Total=3540 [2023-12-25 06:09:56,574 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 52 states have return successors, (53), 52 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-25 06:09:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:59,718 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2023-12-25 06:09:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-25 06:09:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 52 states have return successors, (53), 52 states have call predecessors, (53), 3 states have call successors, (53) Word has length 366 [2023-12-25 06:09:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:59,720 INFO L225 Difference]: With dead ends: 172 [2023-12-25 06:09:59,720 INFO L226 Difference]: Without dead ends: 168 [2023-12-25 06:09:59,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=589, Invalid=11843, Unknown=0, NotChecked=0, Total=12432 [2023-12-25 06:09:59,721 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 210 mSDsluCounter, 5520 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:59,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 5629 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3191 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 06:09:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-25 06:09:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-25 06:09:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 113 states have internal predecessors, (113), 2 states have call successors, (2), 1 states have call predecessors, (2), 53 states have return successors, (54), 53 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-25 06:09:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2023-12-25 06:09:59,724 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 366 [2023-12-25 06:09:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:59,724 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2023-12-25 06:09:59,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 52 states have return successors, (53), 52 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-25 06:09:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2023-12-25 06:09:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-25 06:09:59,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:59,726 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:59,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (109)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:59,948 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 (108)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,108 /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 [2023-12-25 06:10:00,145 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:00,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 542898002, now seen corresponding path program 52 times [2023-12-25 06:10:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376448426] [2023-12-25 06:10:00,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:10:00,146 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 [2023-12-25 06:10:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:00,147 INFO L229 MonitoredProcess]: Starting monitored process 110 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) [2023-12-25 06:10:00,148 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 (110)] Waiting until timeout for monitored process [2023-12-25 06:10:00,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:10:00,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:00,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-25 06:10:00,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2023-12-25 06:10:02,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:03,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376448426] [2023-12-25 06:10:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376448426] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474267836] [2023-12-25 06:10:03,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:10:03,973 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:03,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:10:03,974 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:10:03,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (111)] Waiting until timeout for monitored process [2023-12-25 06:10:05,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:10:05,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:05,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-25 06:10:05,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4133 refuted. 0 times theorem prover too weak. 5357 trivial. 0 not checked. [2023-12-25 06:10:05,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1474267836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:07,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:07,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 58] total 58 [2023-12-25 06:10:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569895510] [2023-12-25 06:10:07,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:07,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-25 06:10:07,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-25 06:10:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3430, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 06:10:07,266 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 58 states, 57 states have (on average 2.0) internal successors, (114), 58 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 53 states have return successors, (54), 53 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-25 06:10:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:10,637 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2023-12-25 06:10:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-25 06:10:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.0) internal successors, (114), 58 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 53 states have return successors, (54), 53 states have call predecessors, (54), 3 states have call successors, (54) Word has length 373 [2023-12-25 06:10:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:10,638 INFO L225 Difference]: With dead ends: 175 [2023-12-25 06:10:10,638 INFO L226 Difference]: Without dead ends: 171 [2023-12-25 06:10:10,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 700 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=600, Invalid=12282, Unknown=0, NotChecked=0, Total=12882 [2023-12-25 06:10:10,640 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 214 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 5843 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:10,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 5843 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 06:10:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-25 06:10:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-12-25 06:10:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.0087719298245614) internal successors, (115), 115 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 54 states have return successors, (55), 54 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-25 06:10:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2023-12-25 06:10:10,643 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 373 [2023-12-25 06:10:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:10,643 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2023-12-25 06:10:10,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.0) internal successors, (114), 58 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 53 states have return successors, (54), 53 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-25 06:10:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2023-12-25 06:10:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-25 06:10:10,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:10,645 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:10,656 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 (110)] Ended with exit code 0 [2023-12-25 06:10:10,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (111)] Ended with exit code 0 [2023-12-25 06:10:11,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /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=3,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:11,064 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:11,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash 810618834, now seen corresponding path program 53 times [2023-12-25 06:10:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:11,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561825144] [2023-12-25 06:10:11,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:10:11,065 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 [2023-12-25 06:10:11,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:11,066 INFO L229 MonitoredProcess]: Starting monitored process 112 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) [2023-12-25 06:10:11,066 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 (112)] Waiting until timeout for monitored process [2023-12-25 06:10:12,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2023-12-25 06:10:12,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:12,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-25 06:10:12,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2023-12-25 06:10:14,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:15,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561825144] [2023-12-25 06:10:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561825144] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1861979071] [2023-12-25 06:10:15,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:10:15,829 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:15,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:10:15,830 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:10:15,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (113)] Waiting until timeout for monitored process [2023-12-25 06:10:17,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2023-12-25 06:10:17,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:17,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-25 06:10:17,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4292 refuted. 0 times theorem prover too weak. 5566 trivial. 0 not checked. [2023-12-25 06:10:17,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1861979071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:19,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 59 [2023-12-25 06:10:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437470753] [2023-12-25 06:10:19,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-25 06:10:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-25 06:10:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3548, Unknown=0, NotChecked=0, Total=3782 [2023-12-25 06:10:19,426 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 59 states, 58 states have (on average 2.0) internal successors, (116), 59 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 54 states have return successors, (55), 54 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-25 06:10:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:22,888 INFO L93 Difference]: Finished difference Result 178 states and 179 transitions. [2023-12-25 06:10:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-25 06:10:22,888 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 59 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 54 states have return successors, (55), 54 states have call predecessors, (55), 3 states have call successors, (55) Word has length 380 [2023-12-25 06:10:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:22,889 INFO L225 Difference]: With dead ends: 178 [2023-12-25 06:10:22,889 INFO L226 Difference]: Without dead ends: 174 [2023-12-25 06:10:22,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 713 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=611, Invalid=12729, Unknown=0, NotChecked=0, Total=13340 [2023-12-25 06:10:22,891 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 218 mSDsluCounter, 5948 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 6061 SdHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:22,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 6061 Invalid, 3476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 06:10:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-25 06:10:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-12-25 06:10:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 117 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 55 states have return successors, (56), 55 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-25 06:10:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2023-12-25 06:10:22,894 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 380 [2023-12-25 06:10:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2023-12-25 06:10:22,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 59 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 54 states have return successors, (55), 54 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-25 06:10:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2023-12-25 06:10:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-25 06:10:22,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:22,896 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:22,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (113)] Ended with exit code 0 [2023-12-25 06:10:23,119 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 (112)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,112 /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 [2023-12-25 06:10:23,311 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:23,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash 503570128, now seen corresponding path program 54 times [2023-12-25 06:10:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570027073] [2023-12-25 06:10:23,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:10:23,312 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 [2023-12-25 06:10:23,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:23,313 INFO L229 MonitoredProcess]: Starting monitored process 114 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) [2023-12-25 06:10:23,314 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 (114)] Waiting until timeout for monitored process [2023-12-25 06:10:24,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-12-25 06:10:24,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:24,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-25 06:10:24,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 46 proven. 4408 refuted. 0 times theorem prover too weak. 5779 trivial. 0 not checked. [2023-12-25 06:10:26,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:28,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:28,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570027073] [2023-12-25 06:10:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570027073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:28,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2007345787] [2023-12-25 06:10:28,233 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:10:28,233 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:28,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:10:28,234 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:10:28,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (115)] Waiting until timeout for monitored process [2023-12-25 06:10:30,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-12-25 06:10:30,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:30,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-25 06:10:30,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2023-12-25 06:10:30,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:32,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2007345787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:32,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 60 [2023-12-25 06:10:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42608605] [2023-12-25 06:10:32,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:32,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-25 06:10:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-25 06:10:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3668, Unknown=0, NotChecked=0, Total=3906 [2023-12-25 06:10:32,360 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand has 60 states, 59 states have (on average 2.0) internal successors, (118), 60 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 55 states have return successors, (56), 55 states have call predecessors, (56), 3 states have call successors, (56) [2023-12-25 06:10:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:36,270 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2023-12-25 06:10:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-25 06:10:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.0) internal successors, (118), 60 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 55 states have return successors, (56), 55 states have call predecessors, (56), 3 states have call successors, (56) Word has length 387 [2023-12-25 06:10:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:36,271 INFO L225 Difference]: With dead ends: 181 [2023-12-25 06:10:36,271 INFO L226 Difference]: Without dead ends: 177 [2023-12-25 06:10:36,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 726 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=622, Invalid=13184, Unknown=0, NotChecked=0, Total=13806 [2023-12-25 06:10:36,273 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 112 mSDsluCounter, 6171 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:36,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 6286 Invalid, 3543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 06:10:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-25 06:10:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-12-25 06:10:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 119 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 56 states have return successors, (57), 56 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-25 06:10:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2023-12-25 06:10:36,276 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 387 [2023-12-25 06:10:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:36,276 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2023-12-25 06:10:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.0) internal successors, (118), 60 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 55 states have return successors, (56), 55 states have call predecessors, (56), 3 states have call successors, (56) [2023-12-25 06:10:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2023-12-25 06:10:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-25 06:10:36,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:36,278 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:36,289 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 (114)] Ended with exit code 0 [2023-12-25 06:10:36,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (115)] Ended with exit code 0 [2023-12-25 06:10:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /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=3,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:36,689 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:36,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -34781740, now seen corresponding path program 55 times [2023-12-25 06:10:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066339995] [2023-12-25 06:10:36,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:10:36,690 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 [2023-12-25 06:10:36,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:36,691 INFO L229 MonitoredProcess]: Starting monitored process 116 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) [2023-12-25 06:10:36,693 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 (116)] Waiting until timeout for monitored process [2023-12-25 06:10:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:10:37,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-25 06:10:37,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2023-12-25 06:10:39,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:41,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066339995] [2023-12-25 06:10:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066339995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836410306] [2023-12-25 06:10:41,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:10:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:10:41,083 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:10:41,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (117)] Waiting until timeout for monitored process [2023-12-25 06:10:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:10:42,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 115 conjunts are in the unsatisfiable core [2023-12-25 06:10:42,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4619 refuted. 0 times theorem prover too weak. 5996 trivial. 0 not checked. [2023-12-25 06:10:43,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:44,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1836410306] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:44,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:44,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 61] total 61 [2023-12-25 06:10:44,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869759833] [2023-12-25 06:10:44,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-25 06:10:44,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-25 06:10:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3790, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 06:10:44,777 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 61 states, 60 states have (on average 2.0) internal successors, (120), 61 states have internal predecessors, (120), 3 states have call successors, (3), 1 states have call predecessors, (3), 56 states have return successors, (57), 56 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-25 06:10:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:48,844 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2023-12-25 06:10:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 06:10:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.0) internal successors, (120), 61 states have internal predecessors, (120), 3 states have call successors, (3), 1 states have call predecessors, (3), 56 states have return successors, (57), 56 states have call predecessors, (57), 3 states have call successors, (57) Word has length 394 [2023-12-25 06:10:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:48,846 INFO L225 Difference]: With dead ends: 184 [2023-12-25 06:10:48,846 INFO L226 Difference]: Without dead ends: 180 [2023-12-25 06:10:48,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 739 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=633, Invalid=13647, Unknown=0, NotChecked=0, Total=14280 [2023-12-25 06:10:48,848 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 114 mSDsluCounter, 6395 mSDsCounter, 0 mSdLazyCounter, 3663 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 6512 SdHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:48,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 6512 Invalid, 3663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3663 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 06:10:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-25 06:10:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-25 06:10:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 121 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 57 states have return successors, (58), 57 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-25 06:10:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2023-12-25 06:10:48,852 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 394 [2023-12-25 06:10:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:48,853 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2023-12-25 06:10:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.0) internal successors, (120), 61 states have internal predecessors, (120), 3 states have call successors, (3), 1 states have call predecessors, (3), 56 states have return successors, (57), 56 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-25 06:10:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2023-12-25 06:10:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-25 06:10:48,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:48,856 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:48,878 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 (116)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:49,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (117)] Ended with exit code 0 [2023-12-25 06:10:49,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /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=3,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:49,270 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:49,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:49,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1859064654, now seen corresponding path program 56 times [2023-12-25 06:10:49,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:49,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860656280] [2023-12-25 06:10:49,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:10:49,271 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 [2023-12-25 06:10:49,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:49,273 INFO L229 MonitoredProcess]: Starting monitored process 118 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) [2023-12-25 06:10:49,274 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 (118)] Waiting until timeout for monitored process [2023-12-25 06:10:50,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:10:50,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:50,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-25 06:10:50,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-25 06:10:51,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:53,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:53,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860656280] [2023-12-25 06:10:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860656280] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:53,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800295995] [2023-12-25 06:10:53,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:10:53,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:10:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:10:53,825 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:10:53,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (119)] Waiting until timeout for monitored process [2023-12-25 06:10:55,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:10:55,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:55,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-25 06:10:55,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-25 06:10:55,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:57,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [800295995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:10:57,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:57,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2023-12-25 06:10:57,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897806793] [2023-12-25 06:10:57,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:57,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-25 06:10:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:57,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-25 06:10:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3790, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 06:10:57,694 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 57 states have return successors, (57), 57 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-25 06:11:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:01,626 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2023-12-25 06:11:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 06:11:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 57 states have return successors, (57), 57 states have call predecessors, (57), 2 states have call successors, (57) Word has length 401 [2023-12-25 06:11:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:01,628 INFO L225 Difference]: With dead ends: 187 [2023-12-25 06:11:01,628 INFO L226 Difference]: Without dead ends: 183 [2023-12-25 06:11:01,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 753 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=584, Invalid=13936, Unknown=0, NotChecked=0, Total=14520 [2023-12-25 06:11:01,630 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 116 mSDsluCounter, 6619 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:01,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 6738 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 06:11:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-25 06:11:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-25 06:11:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 122 states have (on average 1.0081967213114753) internal successors, (123), 123 states have internal predecessors, (123), 2 states have call successors, (2), 1 states have call predecessors, (2), 58 states have return successors, (59), 58 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-25 06:11:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2023-12-25 06:11:01,634 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 401 [2023-12-25 06:11:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:01,634 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2023-12-25 06:11:01,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 57 states have return successors, (57), 57 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-25 06:11:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2023-12-25 06:11:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-25 06:11:01,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:01,636 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:01,648 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 (118)] Ended with exit code 0 [2023-12-25 06:11:01,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (119)] Ended with exit code 0 [2023-12-25 06:11:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /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=3,119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:02,048 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:02,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1305157334, now seen corresponding path program 57 times [2023-12-25 06:11:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436735047] [2023-12-25 06:11:02,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:11:02,049 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 [2023-12-25 06:11:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:02,050 INFO L229 MonitoredProcess]: Starting monitored process 120 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) [2023-12-25 06:11:02,051 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 (120)] Waiting until timeout for monitored process [2023-12-25 06:11:04,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2023-12-25 06:11:04,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:04,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 119 conjunts are in the unsatisfiable core [2023-12-25 06:11:04,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 49 proven. 4909 refuted. 0 times theorem prover too weak. 6442 trivial. 0 not checked. [2023-12-25 06:11:06,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:08,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436735047] [2023-12-25 06:11:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436735047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1752004943] [2023-12-25 06:11:08,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:11:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:08,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:11:08,041 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:11:08,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (121)] Waiting until timeout for monitored process [2023-12-25 06:11:10,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2023-12-25 06:11:10,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:10,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-25 06:11:10,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2023-12-25 06:11:10,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1752004943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:12,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 63 [2023-12-25 06:11:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359183334] [2023-12-25 06:11:12,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:12,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-25 06:11:12,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-25 06:11:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4040, Unknown=0, NotChecked=0, Total=4290 [2023-12-25 06:11:12,641 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 63 states, 62 states have (on average 2.0) internal successors, (124), 63 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 58 states have return successors, (59), 58 states have call predecessors, (59), 3 states have call successors, (59) [2023-12-25 06:11:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:16,969 INFO L93 Difference]: Finished difference Result 190 states and 191 transitions. [2023-12-25 06:11:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-25 06:11:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.0) internal successors, (124), 63 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 58 states have return successors, (59), 58 states have call predecessors, (59), 3 states have call successors, (59) Word has length 408 [2023-12-25 06:11:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:16,971 INFO L225 Difference]: With dead ends: 190 [2023-12-25 06:11:16,971 INFO L226 Difference]: Without dead ends: 186 [2023-12-25 06:11:16,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 765 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=655, Invalid=14597, Unknown=0, NotChecked=0, Total=15252 [2023-12-25 06:11:16,973 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 234 mSDsluCounter, 6852 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:16,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 6973 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3905 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 06:11:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-25 06:11:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-25 06:11:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 124 states have (on average 1.0080645161290323) internal successors, (125), 125 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 59 states have return successors, (60), 59 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-25 06:11:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2023-12-25 06:11:16,976 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 408 [2023-12-25 06:11:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:16,976 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2023-12-25 06:11:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.0) internal successors, (124), 63 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 58 states have return successors, (59), 58 states have call predecessors, (59), 3 states have call successors, (59) [2023-12-25 06:11:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2023-12-25 06:11:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-25 06:11:16,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:16,978 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:16,991 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 (120)] Ended with exit code 0 [2023-12-25 06:11:17,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (121)] Ended with exit code 0 [2023-12-25 06:11:17,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /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=3,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:17,391 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:17,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash 148616396, now seen corresponding path program 58 times [2023-12-25 06:11:17,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:17,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450337560] [2023-12-25 06:11:17,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:11:17,392 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 [2023-12-25 06:11:17,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:17,393 INFO L229 MonitoredProcess]: Starting monitored process 122 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) [2023-12-25 06:11:17,403 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 (122)] Waiting until timeout for monitored process [2023-12-25 06:11:18,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:11:18,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:18,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-25 06:11:18,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2023-12-25 06:11:20,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:22,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450337560] [2023-12-25 06:11:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450337560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1256240468] [2023-12-25 06:11:22,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:11:22,147 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:22,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:11:22,148 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:11:22,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (123)] Waiting until timeout for monitored process [2023-12-25 06:11:23,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:11:23,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:23,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-25 06:11:23,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5132 refuted. 0 times theorem prover too weak. 6671 trivial. 0 not checked. [2023-12-25 06:11:24,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1256240468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:26,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:26,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 64] total 64 [2023-12-25 06:11:26,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313129888] [2023-12-25 06:11:26,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-25 06:11:26,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-25 06:11:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4168, Unknown=0, NotChecked=0, Total=4422 [2023-12-25 06:11:26,117 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 64 states, 63 states have (on average 2.0) internal successors, (126), 64 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 59 states have return successors, (60), 59 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-25 06:11:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:30,555 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2023-12-25 06:11:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-25 06:11:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0) internal successors, (126), 64 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 59 states have return successors, (60), 59 states have call predecessors, (60), 3 states have call successors, (60) Word has length 415 [2023-12-25 06:11:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:30,556 INFO L225 Difference]: With dead ends: 193 [2023-12-25 06:11:30,556 INFO L226 Difference]: Without dead ends: 189 [2023-12-25 06:11:30,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 778 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=666, Invalid=15084, Unknown=0, NotChecked=0, Total=15750 [2023-12-25 06:11:30,559 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 120 mSDsluCounter, 7091 mSDsCounter, 0 mSdLazyCounter, 4035 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 7214 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:30,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 7214 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4035 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 06:11:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-25 06:11:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-12-25 06:11:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.007936507936508) internal successors, (127), 127 states have internal predecessors, (127), 2 states have call successors, (2), 1 states have call predecessors, (2), 60 states have return successors, (61), 60 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-25 06:11:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2023-12-25 06:11:30,562 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 415 [2023-12-25 06:11:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:30,563 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2023-12-25 06:11:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0) internal successors, (126), 64 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 59 states have return successors, (60), 59 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-25 06:11:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2023-12-25 06:11:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-25 06:11:30,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:30,565 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:30,578 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 (122)] Ended with exit code 0 [2023-12-25 06:11:30,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (123)] Ended with exit code 0 [2023-12-25 06:11:30,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /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=3,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:30,978 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:30,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1262254808, now seen corresponding path program 59 times [2023-12-25 06:11:30,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:30,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693775656] [2023-12-25 06:11:30,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:11:30,979 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 [2023-12-25 06:11:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:30,980 INFO L229 MonitoredProcess]: Starting monitored process 124 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) [2023-12-25 06:11:30,981 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 (124)] Waiting until timeout for monitored process [2023-12-25 06:11:33,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2023-12-25 06:11:33,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:33,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-25 06:11:33,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2023-12-25 06:11:35,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:37,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693775656] [2023-12-25 06:11:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693775656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001348150] [2023-12-25 06:11:37,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:11:37,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:11:37,305 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:11:37,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (125)] Waiting until timeout for monitored process [2023-12-25 06:11:39,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2023-12-25 06:11:39,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:39,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 129 conjunts are in the unsatisfiable core [2023-12-25 06:11:39,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 289 proven. 5350 refuted. 0 times theorem prover too weak. 6574 trivial. 0 not checked. [2023-12-25 06:11:40,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1001348150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:42,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 66] total 66 [2023-12-25 06:11:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070035457] [2023-12-25 06:11:42,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-25 06:11:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-25 06:11:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 06:11:42,242 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 60 states have return successors, (64), 60 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-25 06:11:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:46,832 INFO L93 Difference]: Finished difference Result 196 states and 197 transitions. [2023-12-25 06:11:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-25 06:11:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 60 states have return successors, (64), 60 states have call predecessors, (64), 3 states have call successors, (64) Word has length 422 [2023-12-25 06:11:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:46,834 INFO L225 Difference]: With dead ends: 196 [2023-12-25 06:11:46,834 INFO L226 Difference]: Without dead ends: 192 [2023-12-25 06:11:46,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 790 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=741, Invalid=15771, Unknown=0, NotChecked=0, Total=16512 [2023-12-25 06:11:46,836 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 242 mSDsluCounter, 7331 mSDsCounter, 0 mSdLazyCounter, 4163 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 7456 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:46,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 7456 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4163 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-25 06:11:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-25 06:11:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-12-25 06:11:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.0078125) internal successors, (129), 129 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 61 states have return successors, (62), 61 states have call predecessors, (62), 2 states have call successors, (62) [2023-12-25 06:11:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2023-12-25 06:11:46,839 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 422 [2023-12-25 06:11:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:46,840 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2023-12-25 06:11:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 60 states have return successors, (64), 60 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-25 06:11:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2023-12-25 06:11:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-25 06:11:46,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:46,842 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:46,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (125)] Forceful destruction successful, exit code 0 [2023-12-25 06:11:47,062 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 (124)] Ended with exit code 0 [2023-12-25 06:11:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,124 /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 [2023-12-25 06:11:47,250 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:47,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -924327094, now seen corresponding path program 60 times [2023-12-25 06:11:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:47,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696365571] [2023-12-25 06:11:47,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:11:47,252 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 [2023-12-25 06:11:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:47,253 INFO L229 MonitoredProcess]: Starting monitored process 126 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) [2023-12-25 06:11:47,254 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 (126)] Waiting until timeout for monitored process [2023-12-25 06:11:49,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2023-12-25 06:11:49,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:49,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-25 06:11:49,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 52 proven. 5437 refuted. 0 times theorem prover too weak. 7141 trivial. 0 not checked. [2023-12-25 06:11:51,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:53,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:53,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696365571] [2023-12-25 06:11:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696365571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1292359381] [2023-12-25 06:11:53,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:11:53,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:11:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:11:53,640 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:11:53,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (127)] Waiting until timeout for monitored process [2023-12-25 06:11:56,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2023-12-25 06:11:56,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:56,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-25 06:11:56,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2023-12-25 06:11:56,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1292359381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:11:58,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:58,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 66 [2023-12-25 06:11:58,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383127198] [2023-12-25 06:11:58,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:58,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-25 06:11:58,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-25 06:11:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4430, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 06:11:58,566 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 61 states have return successors, (62), 61 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-25 06:12:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:03,361 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2023-12-25 06:12:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-25 06:12:03,362 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 61 states have return successors, (62), 61 states have call predecessors, (62), 3 states have call successors, (62) Word has length 429 [2023-12-25 06:12:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:03,363 INFO L225 Difference]: With dead ends: 199 [2023-12-25 06:12:03,363 INFO L226 Difference]: Without dead ends: 195 [2023-12-25 06:12:03,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 804 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=688, Invalid=16082, Unknown=0, NotChecked=0, Total=16770 [2023-12-25 06:12:03,366 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 246 mSDsluCounter, 7572 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 7699 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:03,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 7699 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4289 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 06:12:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-25 06:12:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-25 06:12:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 131 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 62 states have return successors, (63), 62 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-25 06:12:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2023-12-25 06:12:03,369 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 429 [2023-12-25 06:12:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:03,369 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2023-12-25 06:12:03,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.0) internal successors, (130), 66 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 61 states have return successors, (62), 61 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-25 06:12:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2023-12-25 06:12:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-25 06:12:03,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:03,371 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:03,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (127)] Forceful destruction successful, exit code 0 [2023-12-25 06:12:03,603 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 (126)] Ended with exit code 0 [2023-12-25 06:12:03,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,126 /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 [2023-12-25 06:12:03,788 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 133380570, now seen corresponding path program 61 times [2023-12-25 06:12:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:03,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629826771] [2023-12-25 06:12:03,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:12:03,789 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 [2023-12-25 06:12:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:03,791 INFO L229 MonitoredProcess]: Starting monitored process 128 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) [2023-12-25 06:12:03,792 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 (128)] Waiting until timeout for monitored process [2023-12-25 06:12:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:12:04,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-25 06:12:04,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2023-12-25 06:12:06,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:08,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629826771] [2023-12-25 06:12:08,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629826771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [473185071] [2023-12-25 06:12:08,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:12:08,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:08,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:12:08,872 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:12:08,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (129)] Waiting until timeout for monitored process [2023-12-25 06:12:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:12:10,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 127 conjunts are in the unsatisfiable core [2023-12-25 06:12:10,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5672 refuted. 0 times theorem prover too weak. 7382 trivial. 0 not checked. [2023-12-25 06:12:11,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [473185071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:13,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:13,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 67] total 67 [2023-12-25 06:12:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512380868] [2023-12-25 06:12:13,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-25 06:12:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-25 06:12:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4564, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 06:12:13,308 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand has 67 states, 66 states have (on average 2.0) internal successors, (132), 67 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 62 states have return successors, (63), 62 states have call predecessors, (63), 3 states have call successors, (63) [2023-12-25 06:12:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:18,206 INFO L93 Difference]: Finished difference Result 202 states and 203 transitions. [2023-12-25 06:12:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-25 06:12:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.0) internal successors, (132), 67 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 62 states have return successors, (63), 62 states have call predecessors, (63), 3 states have call successors, (63) Word has length 436 [2023-12-25 06:12:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:18,208 INFO L225 Difference]: With dead ends: 202 [2023-12-25 06:12:18,208 INFO L226 Difference]: Without dead ends: 198 [2023-12-25 06:12:18,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 817 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=699, Invalid=16593, Unknown=0, NotChecked=0, Total=17292 [2023-12-25 06:12:18,210 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 250 mSDsluCounter, 7820 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 4484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:18,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 7949 Invalid, 4484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4421 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 06:12:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-25 06:12:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-25 06:12:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 132 states have (on average 1.0075757575757576) internal successors, (133), 133 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 63 states have return successors, (64), 63 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-25 06:12:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2023-12-25 06:12:18,217 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 436 [2023-12-25 06:12:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:18,218 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2023-12-25 06:12:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.0) internal successors, (132), 67 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 62 states have return successors, (63), 62 states have call predecessors, (63), 3 states have call successors, (63) [2023-12-25 06:12:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2023-12-25 06:12:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-25 06:12:18,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:18,220 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:18,235 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 (128)] Forceful destruction successful, exit code 0 [2023-12-25 06:12:18,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (129)] Ended with exit code 0 [2023-12-25 06:12:18,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /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=3,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:18,634 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:18,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1739473208, now seen corresponding path program 62 times [2023-12-25 06:12:18,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:18,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772221533] [2023-12-25 06:12:18,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:12:18,635 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 [2023-12-25 06:12:18,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:18,636 INFO L229 MonitoredProcess]: Starting monitored process 130 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) [2023-12-25 06:12:18,637 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 (130)] Waiting until timeout for monitored process [2023-12-25 06:12:19,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:12:19,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:19,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-25 06:12:19,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2023-12-25 06:12:21,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:23,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772221533] [2023-12-25 06:12:23,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772221533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905361418] [2023-12-25 06:12:23,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:12:23,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:12:23,816 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:12:23,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (131)] Waiting until timeout for monitored process [2023-12-25 06:12:25,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:12:25,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:25,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-25 06:12:25,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2023-12-25 06:12:26,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:28,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905361418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:28,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:28,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2023-12-25 06:12:28,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169269633] [2023-12-25 06:12:28,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:28,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-25 06:12:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-25 06:12:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4564, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 06:12:28,111 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 67 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 63 states have return successors, (63), 63 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-25 06:12:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:32,873 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2023-12-25 06:12:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-25 06:12:32,874 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 67 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 63 states have return successors, (63), 63 states have call predecessors, (63), 2 states have call successors, (63) Word has length 443 [2023-12-25 06:12:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:32,874 INFO L225 Difference]: With dead ends: 205 [2023-12-25 06:12:32,875 INFO L226 Difference]: Without dead ends: 201 [2023-12-25 06:12:32,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 831 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=644, Invalid=16912, Unknown=0, NotChecked=0, Total=17556 [2023-12-25 06:12:32,877 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 128 mSDsluCounter, 8071 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 8202 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:32,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 8202 Invalid, 4552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 06:12:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-25 06:12:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-12-25 06:12:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.007462686567164) internal successors, (135), 135 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (65), 64 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-25 06:12:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2023-12-25 06:12:32,881 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 443 [2023-12-25 06:12:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:32,881 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2023-12-25 06:12:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 67 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 63 states have return successors, (63), 63 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-25 06:12:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2023-12-25 06:12:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-25 06:12:32,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:32,883 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:32,897 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 (130)] Forceful destruction successful, exit code 0 [2023-12-25 06:12:33,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (131)] Ended with exit code 0 [2023-12-25 06:12:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /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=3,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:33,296 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:33,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -704562212, now seen corresponding path program 63 times [2023-12-25 06:12:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255786513] [2023-12-25 06:12:33,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:12:33,297 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 [2023-12-25 06:12:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:33,298 INFO L229 MonitoredProcess]: Starting monitored process 132 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) [2023-12-25 06:12:33,299 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 (132)] Waiting until timeout for monitored process [2023-12-25 06:12:35,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2023-12-25 06:12:35,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:35,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 131 conjunts are in the unsatisfiable core [2023-12-25 06:12:35,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 55 proven. 5992 refuted. 0 times theorem prover too weak. 7876 trivial. 0 not checked. [2023-12-25 06:12:38,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:40,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:40,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255786513] [2023-12-25 06:12:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255786513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:40,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [724100254] [2023-12-25 06:12:40,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:12:40,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:40,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:12:40,298 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:12:40,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (133)] Waiting until timeout for monitored process [2023-12-25 06:12:43,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2023-12-25 06:12:43,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:43,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-25 06:12:43,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2023-12-25 06:12:43,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:45,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [724100254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:45,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:45,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 69 [2023-12-25 06:12:45,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518053793] [2023-12-25 06:12:45,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-25 06:12:45,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-25 06:12:45,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4838, Unknown=0, NotChecked=0, Total=5112 [2023-12-25 06:12:45,567 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 69 states, 68 states have (on average 2.0) internal successors, (136), 69 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 64 states have return successors, (65), 64 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-25 06:12:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:50,784 INFO L93 Difference]: Finished difference Result 208 states and 209 transitions. [2023-12-25 06:12:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-25 06:12:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.0) internal successors, (136), 69 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 64 states have return successors, (65), 64 states have call predecessors, (65), 3 states have call successors, (65) Word has length 450 [2023-12-25 06:12:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:50,793 INFO L225 Difference]: With dead ends: 208 [2023-12-25 06:12:50,793 INFO L226 Difference]: Without dead ends: 204 [2023-12-25 06:12:50,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 843 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=721, Invalid=17639, Unknown=0, NotChecked=0, Total=18360 [2023-12-25 06:12:50,796 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 130 mSDsluCounter, 8331 mSDsCounter, 0 mSdLazyCounter, 4695 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 8464 SdHoareTripleChecker+Invalid, 4695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:50,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 8464 Invalid, 4695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4695 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 06:12:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-25 06:12:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-25 06:12:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 136 states have (on average 1.0073529411764706) internal successors, (137), 137 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 65 states have return successors, (66), 65 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-25 06:12:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2023-12-25 06:12:50,800 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 450 [2023-12-25 06:12:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:50,800 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2023-12-25 06:12:50,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.0) internal successors, (136), 69 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 64 states have return successors, (65), 64 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-25 06:12:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2023-12-25 06:12:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-25 06:12:50,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:50,802 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:50,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (133)] Ended with exit code 0 [2023-12-25 06:12:51,020 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 (132)] Ended with exit code 0 [2023-12-25 06:12:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,132 /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 [2023-12-25 06:12:51,208 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1827182778, now seen corresponding path program 64 times [2023-12-25 06:12:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691213414] [2023-12-25 06:12:51,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:12:51,209 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 [2023-12-25 06:12:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:51,210 INFO L229 MonitoredProcess]: Starting monitored process 134 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) [2023-12-25 06:12:51,211 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 (134)] Waiting until timeout for monitored process [2023-12-25 06:12:52,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:12:52,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:52,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-25 06:12:52,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-12-25 06:12:54,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:56,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:56,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691213414] [2023-12-25 06:12:56,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691213414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:12:56,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [946392117] [2023-12-25 06:12:56,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:12:56,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:12:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:12:56,728 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:12:56,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (135)] Waiting until timeout for monitored process [2023-12-25 06:12:58,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:12:58,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:58,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 133 conjunts are in the unsatisfiable core [2023-12-25 06:12:58,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6239 refuted. 0 times theorem prover too weak. 8129 trivial. 0 not checked. [2023-12-25 06:12:59,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [946392117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:01,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 70] total 70 [2023-12-25 06:13:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958872684] [2023-12-25 06:13:01,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-25 06:13:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-25 06:13:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4978, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 06:13:01,245 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand has 70 states, 69 states have (on average 2.0) internal successors, (138), 70 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 65 states have return successors, (66), 65 states have call predecessors, (66), 3 states have call successors, (66) [2023-12-25 06:13:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:06,624 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2023-12-25 06:13:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-25 06:13:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.0) internal successors, (138), 70 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 65 states have return successors, (66), 65 states have call predecessors, (66), 3 states have call successors, (66) Word has length 457 [2023-12-25 06:13:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:06,626 INFO L225 Difference]: With dead ends: 211 [2023-12-25 06:13:06,626 INFO L226 Difference]: Without dead ends: 207 [2023-12-25 06:13:06,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 856 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=732, Invalid=18174, Unknown=0, NotChecked=0, Total=18906 [2023-12-25 06:13:06,629 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 132 mSDsluCounter, 8591 mSDsCounter, 0 mSdLazyCounter, 4833 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 8726 SdHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:06,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 8726 Invalid, 4833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4833 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 06:13:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-25 06:13:06,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-25 06:13:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 139 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 66 states have return successors, (67), 66 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-25 06:13:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2023-12-25 06:13:06,633 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 457 [2023-12-25 06:13:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:06,633 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2023-12-25 06:13:06,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.0) internal successors, (138), 70 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 65 states have return successors, (66), 65 states have call predecessors, (66), 3 states have call successors, (66) [2023-12-25 06:13:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2023-12-25 06:13:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-25 06:13:06,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:06,635 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:06,650 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 (134)] Ended with exit code 0 [2023-12-25 06:13:06,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (135)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /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=3,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:07,048 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:07,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1579654946, now seen corresponding path program 65 times [2023-12-25 06:13:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985011518] [2023-12-25 06:13:07,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:13:07,049 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 [2023-12-25 06:13:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:07,051 INFO L229 MonitoredProcess]: Starting monitored process 136 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) [2023-12-25 06:13:07,084 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 (136)] Waiting until timeout for monitored process [2023-12-25 06:13:09,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2023-12-25 06:13:09,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:09,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-25 06:13:10,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-12-25 06:13:12,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:14,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985011518] [2023-12-25 06:13:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985011518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [288168617] [2023-12-25 06:13:14,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:13:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:13:14,496 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:13:14,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (137)] Waiting until timeout for monitored process [2023-12-25 06:13:17,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2023-12-25 06:13:17,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:17,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 139 conjunts are in the unsatisfiable core [2023-12-25 06:13:17,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 64 proven. 6618 refuted. 0 times theorem prover too weak. 8138 trivial. 0 not checked. [2023-12-25 06:13:18,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:20,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [288168617] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:20,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:20,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 72] total 72 [2023-12-25 06:13:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794051994] [2023-12-25 06:13:20,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:20,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-25 06:13:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-25 06:13:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=5263, Unknown=0, NotChecked=0, Total=5550 [2023-12-25 06:13:20,357 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 66 states have return successors, (69), 66 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-25 06:13:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:25,869 INFO L93 Difference]: Finished difference Result 214 states and 215 transitions. [2023-12-25 06:13:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-25 06:13:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 66 states have return successors, (69), 66 states have call predecessors, (69), 3 states have call successors, (69) Word has length 464 [2023-12-25 06:13:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:25,871 INFO L225 Difference]: With dead ends: 214 [2023-12-25 06:13:25,871 INFO L226 Difference]: Without dead ends: 210 [2023-12-25 06:13:25,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 868 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=813, Invalid=18927, Unknown=0, NotChecked=0, Total=19740 [2023-12-25 06:13:25,873 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 266 mSDsluCounter, 8853 mSDsCounter, 0 mSdLazyCounter, 4971 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 8990 SdHoareTripleChecker+Invalid, 5038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:25,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 8990 Invalid, 5038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4971 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 06:13:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-25 06:13:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-12-25 06:13:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 141 states have internal predecessors, (141), 2 states have call successors, (2), 1 states have call predecessors, (2), 67 states have return successors, (68), 67 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-25 06:13:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2023-12-25 06:13:25,877 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 464 [2023-12-25 06:13:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:25,877 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2023-12-25 06:13:25,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 66 states have return successors, (69), 66 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-25 06:13:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2023-12-25 06:13:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-25 06:13:25,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:25,880 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:25,898 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 (136)] Ended with exit code 0 [2023-12-25 06:13:26,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (137)] Ended with exit code 0 [2023-12-25 06:13:26,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /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=3,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:26,280 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:26,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 769064132, now seen corresponding path program 66 times [2023-12-25 06:13:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508377880] [2023-12-25 06:13:26,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:13:26,281 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 [2023-12-25 06:13:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:26,282 INFO L229 MonitoredProcess]: Starting monitored process 138 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) [2023-12-25 06:13:26,283 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 (138)] Waiting until timeout for monitored process [2023-12-25 06:13:29,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2023-12-25 06:13:29,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:29,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 137 conjunts are in the unsatisfiable core [2023-12-25 06:13:29,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 58 proven. 6574 refuted. 0 times theorem prover too weak. 8647 trivial. 0 not checked. [2023-12-25 06:13:31,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:33,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508377880] [2023-12-25 06:13:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508377880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:33,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262876487] [2023-12-25 06:13:33,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:13:33,895 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:33,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:13:33,896 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:13:33,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (139)] Waiting until timeout for monitored process [2023-12-25 06:13:36,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2023-12-25 06:13:36,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:37,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-25 06:13:37,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-25 06:13:37,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [262876487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:39,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:39,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 72 [2023-12-25 06:13:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199822215] [2023-12-25 06:13:39,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:39,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-25 06:13:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-25 06:13:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=5264, Unknown=0, NotChecked=0, Total=5550 [2023-12-25 06:13:39,725 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 67 states have return successors, (68), 67 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-25 06:13:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:45,382 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2023-12-25 06:13:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-25 06:13:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 67 states have return successors, (68), 67 states have call predecessors, (68), 3 states have call successors, (68) Word has length 471 [2023-12-25 06:13:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:45,383 INFO L225 Difference]: With dead ends: 217 [2023-12-25 06:13:45,383 INFO L226 Difference]: Without dead ends: 213 [2023-12-25 06:13:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 882 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=754, Invalid=19268, Unknown=0, NotChecked=0, Total=20022 [2023-12-25 06:13:45,386 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 136 mSDsluCounter, 9123 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 9262 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:45,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 9262 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 06:13:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-25 06:13:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-12-25 06:13:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 143 states have internal predecessors, (143), 2 states have call successors, (2), 1 states have call predecessors, (2), 68 states have return successors, (69), 68 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-25 06:13:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2023-12-25 06:13:45,389 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 471 [2023-12-25 06:13:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:45,389 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2023-12-25 06:13:45,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.0) internal successors, (142), 72 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 67 states have return successors, (68), 67 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-25 06:13:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2023-12-25 06:13:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-25 06:13:45,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:45,392 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:45,409 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 (138)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:45,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (139)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:45,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /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=3,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:45,807 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:45,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1279953120, now seen corresponding path program 67 times [2023-12-25 06:13:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:45,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013701134] [2023-12-25 06:13:45,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:13:45,808 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 [2023-12-25 06:13:45,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:45,809 INFO L229 MonitoredProcess]: Starting monitored process 140 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) [2023-12-25 06:13:45,810 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 (140)] Waiting until timeout for monitored process [2023-12-25 06:13:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:46,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-25 06:13:46,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2023-12-25 06:13:49,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:51,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:51,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013701134] [2023-12-25 06:13:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013701134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:51,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1989186386] [2023-12-25 06:13:51,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:13:51,590 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:51,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:13:51,591 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:13:51,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (141)] Waiting until timeout for monitored process [2023-12-25 06:13:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:53,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 139 conjunts are in the unsatisfiable core [2023-12-25 06:13:53,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6833 refuted. 0 times theorem prover too weak. 8912 trivial. 0 not checked. [2023-12-25 06:13:54,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:56,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1989186386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:13:56,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:56,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 73] total 73 [2023-12-25 06:13:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143321952] [2023-12-25 06:13:56,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-25 06:13:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-25 06:13:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=5410, Unknown=0, NotChecked=0, Total=5700 [2023-12-25 06:13:56,422 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand has 73 states, 72 states have (on average 2.0) internal successors, (144), 73 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 68 states have return successors, (69), 68 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-25 06:14:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:02,293 INFO L93 Difference]: Finished difference Result 220 states and 221 transitions. [2023-12-25 06:14:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-25 06:14:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.0) internal successors, (144), 73 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 68 states have return successors, (69), 68 states have call predecessors, (69), 3 states have call successors, (69) Word has length 478 [2023-12-25 06:14:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:02,294 INFO L225 Difference]: With dead ends: 220 [2023-12-25 06:14:02,294 INFO L226 Difference]: Without dead ends: 216 [2023-12-25 06:14:02,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2288 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=765, Invalid=19827, Unknown=0, NotChecked=0, Total=20592 [2023-12-25 06:14:02,296 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 138 mSDsluCounter, 9395 mSDsCounter, 0 mSdLazyCounter, 5259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 9536 SdHoareTripleChecker+Invalid, 5259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:02,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 9536 Invalid, 5259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5259 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 06:14:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-25 06:14:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-25 06:14:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 145 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 69 states have return successors, (70), 69 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-25 06:14:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2023-12-25 06:14:02,300 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 478 [2023-12-25 06:14:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:02,300 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2023-12-25 06:14:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 2.0) internal successors, (144), 73 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 68 states have return successors, (69), 68 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-25 06:14:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2023-12-25 06:14:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-25 06:14:02,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:02,302 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:02,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (141)] Ended with exit code 0 [2023-12-25 06:14:02,547 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 (140)] Ended with exit code 0 [2023-12-25 06:14:02,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,140 /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 [2023-12-25 06:14:02,728 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:02,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1540267842, now seen corresponding path program 68 times [2023-12-25 06:14:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103573994] [2023-12-25 06:14:02,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:14:02,729 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 [2023-12-25 06:14:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:02,730 INFO L229 MonitoredProcess]: Starting monitored process 142 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) [2023-12-25 06:14:02,732 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 (142)] Waiting until timeout for monitored process [2023-12-25 06:14:03,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:14:03,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:03,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-25 06:14:03,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-12-25 06:14:06,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:08,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103573994] [2023-12-25 06:14:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103573994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1472824858] [2023-12-25 06:14:08,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:14:08,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:14:08,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:14:08,650 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:14:08,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (143)] Waiting until timeout for monitored process [2023-12-25 06:14:10,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:14:10,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:10,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-25 06:14:10,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-12-25 06:14:11,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1472824858] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:13,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2023-12-25 06:14:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692951650] [2023-12-25 06:14:13,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:13,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-25 06:14:13,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-25 06:14:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=5410, Unknown=0, NotChecked=0, Total=5700 [2023-12-25 06:14:13,438 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 69 states have return successors, (69), 69 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-25 06:14:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:19,055 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2023-12-25 06:14:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-25 06:14:19,056 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 69 states have return successors, (69), 69 states have call predecessors, (69), 2 states have call successors, (69) Word has length 485 [2023-12-25 06:14:19,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:19,057 INFO L225 Difference]: With dead ends: 223 [2023-12-25 06:14:19,057 INFO L226 Difference]: Without dead ends: 219 [2023-12-25 06:14:19,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 909 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=704, Invalid=20176, Unknown=0, NotChecked=0, Total=20880 [2023-12-25 06:14:19,059 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 140 mSDsluCounter, 9667 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 9810 SdHoareTripleChecker+Invalid, 5398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:19,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 9810 Invalid, 5398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 06:14:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-25 06:14:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-25 06:14:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 146 states have (on average 1.0068493150684932) internal successors, (147), 147 states have internal predecessors, (147), 2 states have call successors, (2), 1 states have call predecessors, (2), 70 states have return successors, (71), 70 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-25 06:14:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2023-12-25 06:14:19,063 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 485 [2023-12-25 06:14:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:19,063 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2023-12-25 06:14:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 69 states have return successors, (69), 69 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-25 06:14:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2023-12-25 06:14:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-25 06:14:19,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:19,065 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:19,084 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 (142)] Ended with exit code 0 [2023-12-25 06:14:19,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (143)] Ended with exit code 0 [2023-12-25 06:14:19,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /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=3,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:14:19,482 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:19,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash 76125154, now seen corresponding path program 69 times [2023-12-25 06:14:19,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:19,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220844817] [2023-12-25 06:14:19,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:14:19,483 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 [2023-12-25 06:14:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:19,484 INFO L229 MonitoredProcess]: Starting monitored process 144 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) [2023-12-25 06:14:19,485 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 (144)] Waiting until timeout for monitored process [2023-12-25 06:14:22,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2023-12-25 06:14:22,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:22,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-25 06:14:22,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 97 proven. 7213 refuted. 0 times theorem prover too weak. 9388 trivial. 0 not checked. [2023-12-25 06:14:25,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:27,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220844817] [2023-12-25 06:14:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220844817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295236438] [2023-12-25 06:14:27,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:14:27,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:14:27,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:14:27,580 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:14:27,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (145)] Waiting until timeout for monitored process [2023-12-25 06:14:30,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2023-12-25 06:14:30,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:30,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 142 conjunts are in the unsatisfiable core [2023-12-25 06:14:30,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2023-12-25 06:14:31,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295236438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:33,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:33,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 75 [2023-12-25 06:14:33,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30168025] [2023-12-25 06:14:33,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-25 06:14:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-25 06:14:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=5708, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 06:14:33,530 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 75 states, 74 states have (on average 2.0) internal successors, (148), 75 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 70 states have return successors, (72), 70 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-25 06:14:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:39,670 INFO L93 Difference]: Finished difference Result 226 states and 227 transitions. [2023-12-25 06:14:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-25 06:14:39,670 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.0) internal successors, (148), 75 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 70 states have return successors, (72), 70 states have call predecessors, (72), 3 states have call successors, (72) Word has length 492 [2023-12-25 06:14:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:39,671 INFO L225 Difference]: With dead ends: 226 [2023-12-25 06:14:39,671 INFO L226 Difference]: Without dead ends: 222 [2023-12-25 06:14:39,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 921 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2496 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=787, Invalid=20969, Unknown=0, NotChecked=0, Total=21756 [2023-12-25 06:14:39,674 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 142 mSDsluCounter, 9951 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 10096 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:39,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 10096 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5553 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 06:14:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-25 06:14:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-12-25 06:14:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 149 states have internal predecessors, (149), 2 states have call successors, (2), 1 states have call predecessors, (2), 71 states have return successors, (72), 71 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-25 06:14:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2023-12-25 06:14:39,677 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 492 [2023-12-25 06:14:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:39,678 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2023-12-25 06:14:39,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.0) internal successors, (148), 75 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 70 states have return successors, (72), 70 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-25 06:14:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2023-12-25 06:14:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-25 06:14:39,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:39,680 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:39,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (145)] Ended with exit code 0 [2023-12-25 06:14:39,917 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 (144)] Forceful destruction successful, exit code 0 [2023-12-25 06:14:40,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,144 /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 [2023-12-25 06:14:40,103 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:40,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1260622144, now seen corresponding path program 70 times [2023-12-25 06:14:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886691022] [2023-12-25 06:14:40,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:14:40,104 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 [2023-12-25 06:14:40,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:40,105 INFO L229 MonitoredProcess]: Starting monitored process 146 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) [2023-12-25 06:14:40,106 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 (146)] Waiting until timeout for monitored process [2023-12-25 06:14:41,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:14:41,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:41,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-25 06:14:41,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2023-12-25 06:14:43,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:46,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886691022] [2023-12-25 06:14:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886691022] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482211313] [2023-12-25 06:14:46,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:14:46,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:14:46,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:14:46,261 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:14:46,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (147)] Waiting until timeout for monitored process [2023-12-25 06:14:48,475 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:14:48,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:48,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 145 conjunts are in the unsatisfiable core [2023-12-25 06:14:48,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7454 refuted. 0 times theorem prover too weak. 9731 trivial. 0 not checked. [2023-12-25 06:14:49,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482211313] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:14:51,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:51,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 76] total 76 [2023-12-25 06:14:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321976142] [2023-12-25 06:14:51,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-25 06:14:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-25 06:14:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=5860, Unknown=0, NotChecked=0, Total=6162 [2023-12-25 06:14:51,337 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand has 76 states, 75 states have (on average 2.0) internal successors, (150), 76 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 71 states have return successors, (72), 71 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-25 06:14:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:57,633 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2023-12-25 06:14:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-25 06:14:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.0) internal successors, (150), 76 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 71 states have return successors, (72), 71 states have call predecessors, (72), 3 states have call successors, (72) Word has length 499 [2023-12-25 06:14:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:57,635 INFO L225 Difference]: With dead ends: 229 [2023-12-25 06:14:57,635 INFO L226 Difference]: Without dead ends: 225 [2023-12-25 06:14:57,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 934 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=798, Invalid=21552, Unknown=0, NotChecked=0, Total=22350 [2023-12-25 06:14:57,638 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 286 mSDsluCounter, 10232 mSDsCounter, 0 mSdLazyCounter, 5699 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 10379 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 5699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:57,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 10379 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 5699 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 06:14:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-25 06:14:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-12-25 06:14:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 151 states have internal predecessors, (151), 2 states have call successors, (2), 1 states have call predecessors, (2), 72 states have return successors, (73), 72 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-25 06:14:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2023-12-25 06:14:57,641 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 499 [2023-12-25 06:14:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:57,641 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2023-12-25 06:14:57,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.0) internal successors, (150), 76 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 71 states have return successors, (72), 71 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-25 06:14:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2023-12-25 06:14:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 06:14:57,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:57,644 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:57,659 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 (146)] Ended with exit code 0 [2023-12-25 06:14:57,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (147)] Ended with exit code 0 [2023-12-25 06:14:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /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=3,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:14:58,059 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1574477340, now seen corresponding path program 71 times [2023-12-25 06:14:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142540682] [2023-12-25 06:14:58,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:14:58,060 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 [2023-12-25 06:14:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:58,061 INFO L229 MonitoredProcess]: Starting monitored process 148 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) [2023-12-25 06:14:58,062 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 (148)] Waiting until timeout for monitored process [2023-12-25 06:15:01,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2023-12-25 06:15:01,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:01,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 214 conjunts are in the unsatisfiable core [2023-12-25 06:15:01,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7801 refuted. 0 times theorem prover too weak. 9878 trivial. 0 not checked. [2023-12-25 06:15:04,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:06,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:15:06,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142540682] [2023-12-25 06:15:06,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142540682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:06,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1258854027] [2023-12-25 06:15:06,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:15:06,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:06,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:15:06,825 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:15:06,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (149)] Waiting until timeout for monitored process [2023-12-25 06:15:10,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2023-12-25 06:15:10,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:10,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 147 conjunts are in the unsatisfiable core [2023-12-25 06:15:10,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7667 refuted. 0 times theorem prover too weak. 10012 trivial. 0 not checked. [2023-12-25 06:15:10,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1258854027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:12,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:15:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2023-12-25 06:15:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645622588] [2023-12-25 06:15:12,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:15:12,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-25 06:15:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:15:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-25 06:15:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=6014, Unknown=0, NotChecked=0, Total=6320 [2023-12-25 06:15:12,877 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 77 states, 76 states have (on average 2.0) internal successors, (152), 77 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 72 states have return successors, (139), 72 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-25 06:15:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:15:19,261 INFO L93 Difference]: Finished difference Result 232 states and 233 transitions. [2023-12-25 06:15:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-25 06:15:19,262 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.0) internal successors, (152), 77 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 72 states have return successors, (139), 72 states have call predecessors, (139), 3 states have call successors, (139) Word has length 506 [2023-12-25 06:15:19,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:15:19,263 INFO L225 Difference]: With dead ends: 232 [2023-12-25 06:15:19,263 INFO L226 Difference]: Without dead ends: 228 [2023-12-25 06:15:19,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 947 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2639 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=809, Invalid=22143, Unknown=0, NotChecked=0, Total=22952 [2023-12-25 06:15:19,265 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 146 mSDsluCounter, 10523 mSDsCounter, 0 mSdLazyCounter, 5855 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 10672 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:15:19,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 10672 Invalid, 5855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5855 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 06:15:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-25 06:15:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-12-25 06:15:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 152 states have (on average 1.006578947368421) internal successors, (153), 153 states have internal predecessors, (153), 2 states have call successors, (2), 1 states have call predecessors, (2), 73 states have return successors, (74), 73 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-25 06:15:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2023-12-25 06:15:19,268 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 506 [2023-12-25 06:15:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:15:19,269 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2023-12-25 06:15:19,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.0) internal successors, (152), 77 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 72 states have return successors, (139), 72 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-25 06:15:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2023-12-25 06:15:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-25 06:15:19,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:15:19,271 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:15:19,287 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 (148)] Forceful destruction successful, exit code 0 [2023-12-25 06:15:19,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (149)] Forceful destruction successful, exit code 0 [2023-12-25 06:15:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /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=3,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:19,687 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:15:19,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:15:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1686205634, now seen corresponding path program 72 times [2023-12-25 06:15:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:15:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133492521] [2023-12-25 06:15:19,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:15:19,688 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 [2023-12-25 06:15:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:15:19,689 INFO L229 MonitoredProcess]: Starting monitored process 150 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) [2023-12-25 06:15:19,690 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 (150)] Waiting until timeout for monitored process [2023-12-25 06:15:22,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2023-12-25 06:15:22,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:22,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 149 conjunts are in the unsatisfiable core [2023-12-25 06:15:22,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 64 proven. 7819 refuted. 0 times theorem prover too weak. 10297 trivial. 0 not checked. [2023-12-25 06:15:25,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:27,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:15:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133492521] [2023-12-25 06:15:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133492521] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [777286522] [2023-12-25 06:15:27,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:15:27,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:15:27,783 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:15:27,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (151)] Waiting until timeout for monitored process [2023-12-25 06:15:30,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2023-12-25 06:15:30,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:30,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-25 06:15:30,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 80 proven. 7874 refuted. 0 times theorem prover too weak. 10226 trivial. 0 not checked. [2023-12-25 06:15:31,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [777286522] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:33,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:15:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 79] total 79 [2023-12-25 06:15:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107750452] [2023-12-25 06:15:33,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:15:33,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-25 06:15:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:15:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-25 06:15:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=6327, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:15:33,609 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 73 states have return successors, (75), 73 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-25 06:15:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:15:39,441 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2023-12-25 06:15:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-25 06:15:39,441 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 73 states have return successors, (75), 73 states have call predecessors, (75), 3 states have call successors, (75) Word has length 513 [2023-12-25 06:15:39,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:15:39,442 INFO L225 Difference]: With dead ends: 235 [2023-12-25 06:15:39,442 INFO L226 Difference]: Without dead ends: 231 [2023-12-25 06:15:39,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2718 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=897, Invalid=22973, Unknown=0, NotChecked=0, Total=23870 [2023-12-25 06:15:39,445 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 440 mSDsluCounter, 10812 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 10963 SdHoareTripleChecker+Invalid, 6153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:15:39,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 10963 Invalid, 6153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 06:15:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-25 06:15:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-12-25 06:15:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 154 states have (on average 1.0064935064935066) internal successors, (155), 155 states have internal predecessors, (155), 2 states have call successors, (2), 1 states have call predecessors, (2), 74 states have return successors, (75), 74 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-25 06:15:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2023-12-25 06:15:39,448 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 513 [2023-12-25 06:15:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:15:39,448 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2023-12-25 06:15:39,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 73 states have return successors, (75), 73 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-25 06:15:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2023-12-25 06:15:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-25 06:15:39,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:15:39,451 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:15:39,465 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 (150)] Ended with exit code 0 [2023-12-25 06:15:39,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (151)] Forceful destruction successful, exit code 0 [2023-12-25 06:15:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /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=3,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:39,859 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:15:39,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:15:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash -15346970, now seen corresponding path program 73 times [2023-12-25 06:15:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:15:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125713594] [2023-12-25 06:15:39,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:15:39,860 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 [2023-12-25 06:15:39,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:15:39,861 INFO L229 MonitoredProcess]: Starting monitored process 152 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) [2023-12-25 06:15:39,865 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 (152)] Waiting until timeout for monitored process [2023-12-25 06:15:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:15:41,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-25 06:15:41,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2023-12-25 06:15:43,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:45,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:15:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125713594] [2023-12-25 06:15:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125713594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1999664303] [2023-12-25 06:15:45,841 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:15:45,841 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:15:45,842 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:15:45,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (153)] Waiting until timeout for monitored process [2023-12-25 06:15:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:15:47,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 151 conjunts are in the unsatisfiable core [2023-12-25 06:15:48,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8102 refuted. 0 times theorem prover too weak. 10586 trivial. 0 not checked. [2023-12-25 06:15:48,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1999664303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:15:50,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:15:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 79] total 79 [2023-12-25 06:15:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257514274] [2023-12-25 06:15:50,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:15:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-25 06:15:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:15:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-25 06:15:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6328, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:15:50,698 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 74 states have return successors, (75), 74 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-25 06:15:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:15:56,701 INFO L93 Difference]: Finished difference Result 238 states and 239 transitions. [2023-12-25 06:15:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-25 06:15:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 74 states have return successors, (75), 74 states have call predecessors, (75), 3 states have call successors, (75) Word has length 520 [2023-12-25 06:15:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:15:56,702 INFO L225 Difference]: With dead ends: 238 [2023-12-25 06:15:56,702 INFO L226 Difference]: Without dead ends: 234 [2023-12-25 06:15:56,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 973 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2711 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=831, Invalid=23349, Unknown=0, NotChecked=0, Total=24180 [2023-12-25 06:15:56,704 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 298 mSDsluCounter, 11108 mSDsCounter, 0 mSdLazyCounter, 6161 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 11261 SdHoareTripleChecker+Invalid, 6236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 6161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:15:56,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 11261 Invalid, 6236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 6161 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 06:15:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-25 06:15:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-12-25 06:15:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 156 states have (on average 1.0064102564102564) internal successors, (157), 157 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 75 states have return successors, (76), 75 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-25 06:15:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2023-12-25 06:15:56,708 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 520 [2023-12-25 06:15:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:15:56,709 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2023-12-25 06:15:56,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.0) internal successors, (156), 79 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 74 states have return successors, (75), 74 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-25 06:15:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2023-12-25 06:15:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-25 06:15:56,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:15:56,712 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:15:56,727 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 (152)] Ended with exit code 0 [2023-12-25 06:15:56,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (153)] Ended with exit code 0 [2023-12-25 06:15:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /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=3,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:15:57,127 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:15:57,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:15:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1658000572, now seen corresponding path program 74 times [2023-12-25 06:15:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:15:57,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145934295] [2023-12-25 06:15:57,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:15:57,128 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 [2023-12-25 06:15:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:15:57,129 INFO L229 MonitoredProcess]: Starting monitored process 154 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) [2023-12-25 06:15:57,129 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 (154)] Waiting until timeout for monitored process [2023-12-25 06:15:58,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:15:58,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:58,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-25 06:15:58,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2023-12-25 06:16:00,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:03,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:16:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145934295] [2023-12-25 06:16:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145934295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059020064] [2023-12-25 06:16:03,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:16:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:16:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:16:03,165 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:16:03,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (155)] Waiting until timeout for monitored process [2023-12-25 06:16:05,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:16:05,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:05,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-25 06:16:05,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2023-12-25 06:16:05,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:08,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059020064] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:08,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:16:08,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2023-12-25 06:16:08,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792603194] [2023-12-25 06:16:08,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:16:08,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-25 06:16:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:16:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-25 06:16:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6328, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:16:08,138 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 75 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-25 06:16:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:16:14,111 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2023-12-25 06:16:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-25 06:16:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 75 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) Word has length 527 [2023-12-25 06:16:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:16:14,116 INFO L225 Difference]: With dead ends: 241 [2023-12-25 06:16:14,116 INFO L226 Difference]: Without dead ends: 237 [2023-12-25 06:16:14,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 987 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=764, Invalid=23728, Unknown=0, NotChecked=0, Total=24492 [2023-12-25 06:16:14,119 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 152 mSDsluCounter, 11407 mSDsCounter, 0 mSdLazyCounter, 6316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 11562 SdHoareTripleChecker+Invalid, 6316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:16:14,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 11562 Invalid, 6316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6316 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 06:16:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-25 06:16:14,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-25 06:16:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 159 states have internal predecessors, (159), 2 states have call successors, (2), 1 states have call predecessors, (2), 76 states have return successors, (77), 76 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-25 06:16:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2023-12-25 06:16:14,122 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 527 [2023-12-25 06:16:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:16:14,122 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2023-12-25 06:16:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 75 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-25 06:16:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2023-12-25 06:16:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-25 06:16:14,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:16:14,125 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:16:14,139 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 (154)] Ended with exit code 0 [2023-12-25 06:16:14,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (155)] Forceful destruction successful, exit code 0 [2023-12-25 06:16:14,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /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=3,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:16:14,539 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:16:14,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:16:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1369884392, now seen corresponding path program 75 times [2023-12-25 06:16:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:16:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020769840] [2023-12-25 06:16:14,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:16:14,540 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 [2023-12-25 06:16:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:16:14,541 INFO L229 MonitoredProcess]: Starting monitored process 156 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) [2023-12-25 06:16:14,541 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 (156)] Waiting until timeout for monitored process [2023-12-25 06:16:17,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2023-12-25 06:16:17,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:17,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-25 06:16:17,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 109 proven. 8512 refuted. 0 times theorem prover too weak. 11104 trivial. 0 not checked. [2023-12-25 06:16:20,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:23,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:16:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020769840] [2023-12-25 06:16:23,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020769840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586277923] [2023-12-25 06:16:23,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:16:23,141 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:16:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:16:23,142 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:16:23,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (157)] Waiting until timeout for monitored process [2023-12-25 06:16:26,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2023-12-25 06:16:26,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:26,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-25 06:16:26,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-12-25 06:16:27,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [586277923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:29,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:16:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 81 [2023-12-25 06:16:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134976616] [2023-12-25 06:16:29,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:16:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-25 06:16:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:16:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-25 06:16:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=6650, Unknown=0, NotChecked=0, Total=6972 [2023-12-25 06:16:29,394 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand has 81 states, 80 states have (on average 2.0) internal successors, (160), 81 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 76 states have return successors, (78), 76 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-25 06:16:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:16:35,701 INFO L93 Difference]: Finished difference Result 244 states and 245 transitions. [2023-12-25 06:16:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-25 06:16:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.0) internal successors, (160), 81 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 76 states have return successors, (78), 76 states have call predecessors, (78), 3 states have call successors, (78) Word has length 534 [2023-12-25 06:16:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:16:35,702 INFO L225 Difference]: With dead ends: 244 [2023-12-25 06:16:35,702 INFO L226 Difference]: Without dead ends: 240 [2023-12-25 06:16:35,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 999 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2937 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=853, Invalid=24587, Unknown=0, NotChecked=0, Total=25440 [2023-12-25 06:16:35,705 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 154 mSDsluCounter, 11715 mSDsCounter, 0 mSdLazyCounter, 6483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 11872 SdHoareTripleChecker+Invalid, 6483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:16:35,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 11872 Invalid, 6483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6483 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 06:16:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-25 06:16:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2023-12-25 06:16:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 160 states have (on average 1.00625) internal successors, (161), 161 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 77 states have return successors, (78), 77 states have call predecessors, (78), 2 states have call successors, (78) [2023-12-25 06:16:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2023-12-25 06:16:35,708 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 534 [2023-12-25 06:16:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:16:35,708 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2023-12-25 06:16:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.0) internal successors, (160), 81 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 76 states have return successors, (78), 76 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-25 06:16:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2023-12-25 06:16:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-25 06:16:35,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:16:35,711 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:16:35,727 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 (156)] Forceful destruction successful, exit code 0 [2023-12-25 06:16:35,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (157)] Ended with exit code 0 [2023-12-25 06:16:36,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /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=3,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:16:36,125 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:16:36,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:16:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1956129594, now seen corresponding path program 76 times [2023-12-25 06:16:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:16:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824613679] [2023-12-25 06:16:36,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:16:36,126 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 [2023-12-25 06:16:36,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:16:36,127 INFO L229 MonitoredProcess]: Starting monitored process 158 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) [2023-12-25 06:16:36,127 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 (158)] Waiting until timeout for monitored process [2023-12-25 06:16:37,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:16:37,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:37,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-25 06:16:37,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-12-25 06:16:40,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:42,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:16:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824613679] [2023-12-25 06:16:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824613679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2034404584] [2023-12-25 06:16:42,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:16:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:16:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:16:42,589 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:16:42,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (159)] Waiting until timeout for monitored process [2023-12-25 06:16:44,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:16:44,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:44,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 157 conjunts are in the unsatisfiable core [2023-12-25 06:16:44,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8777 refuted. 0 times theorem prover too weak. 11477 trivial. 0 not checked. [2023-12-25 06:16:45,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2034404584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:16:47,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:16:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 82] total 82 [2023-12-25 06:16:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148173595] [2023-12-25 06:16:47,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:16:47,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-25 06:16:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:16:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-25 06:16:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=6814, Unknown=0, NotChecked=0, Total=7140 [2023-12-25 06:16:47,597 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 82 states, 81 states have (on average 2.0) internal successors, (162), 82 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 77 states have return successors, (78), 77 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-25 06:16:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:16:54,170 INFO L93 Difference]: Finished difference Result 247 states and 248 transitions. [2023-12-25 06:16:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-25 06:16:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.0) internal successors, (162), 82 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 77 states have return successors, (78), 77 states have call predecessors, (78), 3 states have call successors, (78) Word has length 541 [2023-12-25 06:16:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:16:54,171 INFO L225 Difference]: With dead ends: 247 [2023-12-25 06:16:54,171 INFO L226 Difference]: Without dead ends: 243 [2023-12-25 06:16:54,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1012 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2936 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=864, Invalid=25218, Unknown=0, NotChecked=0, Total=26082 [2023-12-25 06:16:54,174 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 310 mSDsluCounter, 12020 mSDsCounter, 0 mSdLazyCounter, 6641 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 12179 SdHoareTripleChecker+Invalid, 6719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 6641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:16:54,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 12179 Invalid, 6719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 6641 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 06:16:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-25 06:16:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-12-25 06:16:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 163 states have internal predecessors, (163), 2 states have call successors, (2), 1 states have call predecessors, (2), 78 states have return successors, (79), 78 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-25 06:16:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2023-12-25 06:16:54,178 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 541 [2023-12-25 06:16:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:16:54,178 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2023-12-25 06:16:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.0) internal successors, (162), 82 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 77 states have return successors, (78), 77 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-25 06:16:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2023-12-25 06:16:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-25 06:16:54,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:16:54,181 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:16:54,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (159)] Forceful destruction successful, exit code 0 [2023-12-25 06:16:54,395 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 (158)] Ended with exit code 0 [2023-12-25 06:16:54,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,158 /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 [2023-12-25 06:16:54,582 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:16:54,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:16:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2037637654, now seen corresponding path program 77 times [2023-12-25 06:16:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:16:54,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650503611] [2023-12-25 06:16:54,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:16:54,583 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 [2023-12-25 06:16:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:16:54,583 INFO L229 MonitoredProcess]: Starting monitored process 160 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) [2023-12-25 06:16:54,584 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 (160)] Waiting until timeout for monitored process [2023-12-25 06:16:57,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2023-12-25 06:16:57,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:57,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 233 conjunts are in the unsatisfiable core [2023-12-25 06:16:57,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 73 proven. 9157 refuted. 0 times theorem prover too weak. 11560 trivial. 0 not checked. [2023-12-25 06:17:00,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:03,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:17:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650503611] [2023-12-25 06:17:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650503611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [679377327] [2023-12-25 06:17:03,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:17:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:17:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:17:03,263 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:17:03,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (161)] Waiting until timeout for monitored process [2023-12-25 06:17:06,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2023-12-25 06:17:06,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:17:06,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 159 conjunts are in the unsatisfiable core [2023-12-25 06:17:06,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 9008 refuted. 0 times theorem prover too weak. 11782 trivial. 0 not checked. [2023-12-25 06:17:07,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [679377327] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:09,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:17:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 84 [2023-12-25 06:17:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949328100] [2023-12-25 06:17:09,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:17:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-25 06:17:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:17:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-25 06:17:09,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=7147, Unknown=0, NotChecked=0, Total=7482 [2023-12-25 06:17:09,743 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 78 states have return successors, (151), 78 states have call predecessors, (151), 3 states have call successors, (151) [2023-12-25 06:17:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:17:16,370 INFO L93 Difference]: Finished difference Result 250 states and 251 transitions. [2023-12-25 06:17:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-25 06:17:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 78 states have return successors, (151), 78 states have call predecessors, (151), 3 states have call successors, (151) Word has length 548 [2023-12-25 06:17:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:17:16,371 INFO L225 Difference]: With dead ends: 250 [2023-12-25 06:17:16,371 INFO L226 Difference]: Without dead ends: 246 [2023-12-25 06:17:16,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1024 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3258 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=957, Invalid=26103, Unknown=0, NotChecked=0, Total=27060 [2023-12-25 06:17:16,374 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 158 mSDsluCounter, 12336 mSDsCounter, 0 mSdLazyCounter, 6811 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 12497 SdHoareTripleChecker+Invalid, 6811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:17:16,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 12497 Invalid, 6811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6811 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 06:17:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-25 06:17:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-12-25 06:17:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 164 states have (on average 1.0060975609756098) internal successors, (165), 165 states have internal predecessors, (165), 2 states have call successors, (2), 1 states have call predecessors, (2), 79 states have return successors, (80), 79 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-25 06:17:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2023-12-25 06:17:16,378 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 548 [2023-12-25 06:17:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:17:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2023-12-25 06:17:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 78 states have return successors, (151), 78 states have call predecessors, (151), 3 states have call successors, (151) [2023-12-25 06:17:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2023-12-25 06:17:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-25 06:17:16,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:17:16,381 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:17:16,398 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 (160)] Forceful destruction successful, exit code 0 [2023-12-25 06:17:16,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (161)] Forceful destruction successful, exit code 0 [2023-12-25 06:17:16,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 /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=3,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:17:16,808 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:17:16,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:17:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1999367864, now seen corresponding path program 78 times [2023-12-25 06:17:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:17:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95466212] [2023-12-25 06:17:16,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:17:16,809 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 [2023-12-25 06:17:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:17:16,810 INFO L229 MonitoredProcess]: Starting monitored process 162 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) [2023-12-25 06:17:16,811 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 (162)] Waiting until timeout for monitored process [2023-12-25 06:17:20,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2023-12-25 06:17:20,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:17:20,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-25 06:17:20,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 70 proven. 9172 refuted. 0 times theorem prover too weak. 12091 trivial. 0 not checked. [2023-12-25 06:17:23,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:25,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:17:25,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95466212] [2023-12-25 06:17:25,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95466212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:25,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2137942634] [2023-12-25 06:17:25,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:17:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:17:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:17:25,466 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:17:25,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (163)] Waiting until timeout for monitored process [2023-12-25 06:17:28,969 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2023-12-25 06:17:28,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:17:29,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 160 conjunts are in the unsatisfiable core [2023-12-25 06:17:29,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-25 06:17:29,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2137942634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:31,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:17:31,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 84 [2023-12-25 06:17:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684735305] [2023-12-25 06:17:31,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:17:31,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-25 06:17:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:17:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-25 06:17:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=7148, Unknown=0, NotChecked=0, Total=7482 [2023-12-25 06:17:31,903 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 79 states have return successors, (80), 79 states have call predecessors, (80), 3 states have call successors, (80) [2023-12-25 06:17:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:17:38,723 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2023-12-25 06:17:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-25 06:17:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 79 states have return successors, (80), 79 states have call predecessors, (80), 3 states have call successors, (80) Word has length 555 [2023-12-25 06:17:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:17:38,731 INFO L225 Difference]: With dead ends: 253 [2023-12-25 06:17:38,731 INFO L226 Difference]: Without dead ends: 249 [2023-12-25 06:17:38,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1038 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=886, Invalid=26504, Unknown=0, NotChecked=0, Total=27390 [2023-12-25 06:17:38,734 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 318 mSDsluCounter, 12648 mSDsCounter, 0 mSdLazyCounter, 6971 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 12811 SdHoareTripleChecker+Invalid, 7051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 6971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:17:38,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 12811 Invalid, 7051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 6971 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 06:17:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-25 06:17:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-12-25 06:17:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 167 states have internal predecessors, (167), 2 states have call successors, (2), 1 states have call predecessors, (2), 80 states have return successors, (81), 80 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-25 06:17:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2023-12-25 06:17:38,738 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 555 [2023-12-25 06:17:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:17:38,738 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2023-12-25 06:17:38,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.0) internal successors, (166), 84 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 79 states have return successors, (80), 79 states have call predecessors, (80), 3 states have call successors, (80) [2023-12-25 06:17:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2023-12-25 06:17:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2023-12-25 06:17:38,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:17:38,741 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:17:38,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (163)] Ended with exit code 0 [2023-12-25 06:17:38,963 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 (162)] Ended with exit code 0 [2023-12-25 06:17:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,162 /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 [2023-12-25 06:17:39,142 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:17:39,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:17:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1697138708, now seen corresponding path program 79 times [2023-12-25 06:17:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:17:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001064902] [2023-12-25 06:17:39,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:17:39,143 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 [2023-12-25 06:17:39,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:17:39,144 INFO L229 MonitoredProcess]: Starting monitored process 164 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) [2023-12-25 06:17:39,145 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 (164)] Waiting until timeout for monitored process [2023-12-25 06:17:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:17:40,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 162 conjunts are in the unsatisfiable core [2023-12-25 06:17:40,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-12-25 06:17:43,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:46,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:17:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001064902] [2023-12-25 06:17:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001064902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689886663] [2023-12-25 06:17:46,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:17:46,512 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:17:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:17:46,513 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:17:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (165)] Waiting until timeout for monitored process [2023-12-25 06:17:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:17:49,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 163 conjunts are in the unsatisfiable core [2023-12-25 06:17:49,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9479 refuted. 0 times theorem prover too weak. 12404 trivial. 0 not checked. [2023-12-25 06:17:49,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:52,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689886663] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:17:52,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:17:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 85] total 85 [2023-12-25 06:17:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609951936] [2023-12-25 06:17:52,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:17:52,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-25 06:17:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:17:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-25 06:17:52,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=7318, Unknown=0, NotChecked=0, Total=7656 [2023-12-25 06:17:52,435 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 85 states, 84 states have (on average 2.0) internal successors, (168), 85 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 80 states have return successors, (81), 80 states have call predecessors, (81), 3 states have call successors, (81) [2023-12-25 06:18:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:00,146 INFO L93 Difference]: Finished difference Result 256 states and 257 transitions. [2023-12-25 06:18:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-25 06:18:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.0) internal successors, (168), 85 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 80 states have return successors, (81), 80 states have call predecessors, (81), 3 states have call successors, (81) Word has length 562 [2023-12-25 06:18:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:00,148 INFO L225 Difference]: With dead ends: 256 [2023-12-25 06:18:00,148 INFO L226 Difference]: Without dead ends: 252 [2023-12-25 06:18:00,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1051 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3170 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=897, Invalid=27159, Unknown=0, NotChecked=0, Total=28056 [2023-12-25 06:18:00,151 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 322 mSDsluCounter, 12968 mSDsCounter, 0 mSdLazyCounter, 7139 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 13133 SdHoareTripleChecker+Invalid, 7220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 7139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:00,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 13133 Invalid, 7220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 7139 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 06:18:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-25 06:18:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-25 06:18:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 168 states have (on average 1.005952380952381) internal successors, (169), 169 states have internal predecessors, (169), 2 states have call successors, (2), 1 states have call predecessors, (2), 81 states have return successors, (82), 81 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-25 06:18:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2023-12-25 06:18:00,155 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 562 [2023-12-25 06:18:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:00,155 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2023-12-25 06:18:00,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 2.0) internal successors, (168), 85 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 80 states have return successors, (81), 80 states have call predecessors, (81), 3 states have call successors, (81) [2023-12-25 06:18:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2023-12-25 06:18:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-12-25 06:18:00,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:00,158 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:00,174 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 (164)] Ended with exit code 0 [2023-12-25 06:18:00,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (165)] Ended with exit code 0 [2023-12-25 06:18:00,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /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=3,165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:18:00,572 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:00,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1938587446, now seen corresponding path program 80 times [2023-12-25 06:18:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773727632] [2023-12-25 06:18:00,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:18:00,574 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 [2023-12-25 06:18:00,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:00,575 INFO L229 MonitoredProcess]: Starting monitored process 166 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) [2023-12-25 06:18:00,576 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 (166)] Waiting until timeout for monitored process [2023-12-25 06:18:01,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:18:01,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:02,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 164 conjunts are in the unsatisfiable core [2023-12-25 06:18:02,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2023-12-25 06:18:05,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:07,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773727632] [2023-12-25 06:18:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773727632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:18:07,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1416410051] [2023-12-25 06:18:07,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:18:07,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:18:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:18:07,907 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:18:07,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (167)] Waiting until timeout for monitored process [2023-12-25 06:18:10,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:18:10,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:10,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 164 conjunts are in the unsatisfiable core [2023-12-25 06:18:10,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2023-12-25 06:18:11,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1416410051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:18:13,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:18:13,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2023-12-25 06:18:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076066896] [2023-12-25 06:18:13,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:18:13,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-25 06:18:13,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:18:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-25 06:18:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=7318, Unknown=0, NotChecked=0, Total=7656 [2023-12-25 06:18:13,814 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 85 states have internal predecessors, (169), 2 states have call successors, (2), 1 states have call predecessors, (2), 81 states have return successors, (81), 81 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-25 06:18:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:21,197 INFO L93 Difference]: Finished difference Result 259 states and 260 transitions. [2023-12-25 06:18:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-25 06:18:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 85 states have internal predecessors, (169), 2 states have call successors, (2), 1 states have call predecessors, (2), 81 states have return successors, (81), 81 states have call predecessors, (81), 2 states have call successors, (81) Word has length 569 [2023-12-25 06:18:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:21,198 INFO L225 Difference]: With dead ends: 259 [2023-12-25 06:18:21,198 INFO L226 Difference]: Without dead ends: 255 [2023-12-25 06:18:21,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1065 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3245 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=824, Invalid=27568, Unknown=0, NotChecked=0, Total=28392 [2023-12-25 06:18:21,200 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 164 mSDsluCounter, 13291 mSDsCounter, 0 mSdLazyCounter, 7306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 13458 SdHoareTripleChecker+Invalid, 7306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:21,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 13458 Invalid, 7306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7306 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-25 06:18:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-25 06:18:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-25 06:18:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 171 states have internal predecessors, (171), 2 states have call successors, (2), 1 states have call predecessors, (2), 82 states have return successors, (83), 82 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-25 06:18:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2023-12-25 06:18:21,204 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 569 [2023-12-25 06:18:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:21,204 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2023-12-25 06:18:21,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 85 states have internal predecessors, (169), 2 states have call successors, (2), 1 states have call predecessors, (2), 81 states have return successors, (81), 81 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-25 06:18:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2023-12-25 06:18:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-12-25 06:18:21,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:21,207 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:21,222 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 (166)] Ended with exit code 0 [2023-12-25 06:18:21,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (167)] Ended with exit code 0 [2023-12-25 06:18:21,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /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=3,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:18:21,622 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:21,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -168069906, now seen corresponding path program 81 times [2023-12-25 06:18:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259252898] [2023-12-25 06:18:21,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:18:21,623 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 [2023-12-25 06:18:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:21,624 INFO L229 MonitoredProcess]: Starting monitored process 168 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) [2023-12-25 06:18:21,625 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 (168)] Waiting until timeout for monitored process [2023-12-25 06:18:25,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2023-12-25 06:18:25,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:25,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-25 06:18:25,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 121 proven. 9919 refuted. 0 times theorem prover too weak. 12964 trivial. 0 not checked. [2023-12-25 06:18:29,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:31,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259252898] [2023-12-25 06:18:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259252898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:18:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2095915152] [2023-12-25 06:18:31,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:18:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:18:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:18:31,829 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:18:31,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (169)] Waiting until timeout for monitored process [2023-12-25 06:18:35,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2023-12-25 06:18:35,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:36,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 166 conjunts are in the unsatisfiable core [2023-12-25 06:18:36,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2023-12-25 06:18:36,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:39,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2095915152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:18:39,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:18:39,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 87 [2023-12-25 06:18:39,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706915192] [2023-12-25 06:18:39,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:18:39,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-12-25 06:18:39,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:18:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-12-25 06:18:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=7664, Unknown=0, NotChecked=0, Total=8010 [2023-12-25 06:18:39,202 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 87 states, 86 states have (on average 2.0) internal successors, (172), 87 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 82 states have return successors, (84), 82 states have call predecessors, (84), 3 states have call successors, (84) [2023-12-25 06:18:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:47,321 INFO L93 Difference]: Finished difference Result 262 states and 263 transitions. [2023-12-25 06:18:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-25 06:18:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 2.0) internal successors, (172), 87 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 82 states have return successors, (84), 82 states have call predecessors, (84), 3 states have call successors, (84) Word has length 576 [2023-12-25 06:18:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:47,322 INFO L225 Difference]: With dead ends: 262 [2023-12-25 06:18:47,322 INFO L226 Difference]: Without dead ends: 258 [2023-12-25 06:18:47,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1077 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=919, Invalid=28493, Unknown=0, NotChecked=0, Total=29412 [2023-12-25 06:18:47,325 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 330 mSDsluCounter, 13620 mSDsCounter, 0 mSdLazyCounter, 7481 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 13789 SdHoareTripleChecker+Invalid, 7564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 7481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:47,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 13789 Invalid, 7564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 7481 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 06:18:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-25 06:18:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-12-25 06:18:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 172 states have (on average 1.005813953488372) internal successors, (173), 173 states have internal predecessors, (173), 2 states have call successors, (2), 1 states have call predecessors, (2), 83 states have return successors, (84), 83 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-25 06:18:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2023-12-25 06:18:47,329 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 576 [2023-12-25 06:18:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:47,329 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2023-12-25 06:18:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 2.0) internal successors, (172), 87 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 82 states have return successors, (84), 82 states have call predecessors, (84), 3 states have call successors, (84) [2023-12-25 06:18:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2023-12-25 06:18:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-25 06:18:47,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:47,332 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:47,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (169)] Forceful destruction successful, exit code 0 [2023-12-25 06:18:47,579 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 (168)] Ended with exit code 0 [2023-12-25 06:18:47,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,168 /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 [2023-12-25 06:18:47,756 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:47,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash -78119756, now seen corresponding path program 82 times [2023-12-25 06:18:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986938022] [2023-12-25 06:18:47,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:18:47,757 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 [2023-12-25 06:18:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:47,758 INFO L229 MonitoredProcess]: Starting monitored process 170 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) [2023-12-25 06:18:47,760 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 (170)] Waiting until timeout for monitored process [2023-12-25 06:18:49,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:18:49,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:49,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-25 06:18:49,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2023-12-25 06:18:52,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:55,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986938022] [2023-12-25 06:18:55,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986938022] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:18:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [105135953] [2023-12-25 06:18:55,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:18:55,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:18:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:18:55,467 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:18:55,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (171)] Waiting until timeout for monitored process [2023-12-25 06:18:58,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:18:58,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:58,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 169 conjunts are in the unsatisfiable core [2023-12-25 06:18:58,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 13367 trivial. 0 not checked. [2023-12-25 06:18:59,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:19:01,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [105135953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:19:01,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:19:01,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 88] total 88 [2023-12-25 06:19:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044906702] [2023-12-25 06:19:01,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:19:01,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-25 06:19:01,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:19:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-25 06:19:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=7840, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 06:19:01,616 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand has 88 states, 87 states have (on average 2.0) internal successors, (174), 88 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 83 states have return successors, (84), 83 states have call predecessors, (84), 3 states have call successors, (84) [2023-12-25 06:19:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:19:09,949 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2023-12-25 06:19:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-25 06:19:09,950 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.0) internal successors, (174), 88 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 83 states have return successors, (84), 83 states have call predecessors, (84), 3 states have call successors, (84) Word has length 583 [2023-12-25 06:19:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:19:09,951 INFO L225 Difference]: With dead ends: 265 [2023-12-25 06:19:09,951 INFO L226 Difference]: Without dead ends: 261 [2023-12-25 06:19:09,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1090 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=930, Invalid=29172, Unknown=0, NotChecked=0, Total=30102 [2023-12-25 06:19:09,953 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 168 mSDsluCounter, 13955 mSDsCounter, 0 mSdLazyCounter, 7659 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 14126 SdHoareTripleChecker+Invalid, 7659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:19:09,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 14126 Invalid, 7659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7659 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-25 06:19:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-25 06:19:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-25 06:19:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 175 states have internal predecessors, (175), 2 states have call successors, (2), 1 states have call predecessors, (2), 84 states have return successors, (85), 84 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-25 06:19:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2023-12-25 06:19:09,957 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 583 [2023-12-25 06:19:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:19:09,957 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2023-12-25 06:19:09,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.0) internal successors, (174), 88 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 83 states have return successors, (84), 83 states have call predecessors, (84), 3 states have call successors, (84) [2023-12-25 06:19:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2023-12-25 06:19:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-25 06:19:09,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:19:09,960 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:19:09,983 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 (170)] Forceful destruction successful, exit code 0 [2023-12-25 06:19:10,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (171)] Ended with exit code 0 [2023-12-25 06:19:10,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /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=3,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 06:19:10,361 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:19:10,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:19:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1010223888, now seen corresponding path program 83 times [2023-12-25 06:19:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:19:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698808990] [2023-12-25 06:19:10,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:19:10,362 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 [2023-12-25 06:19:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:19:10,363 INFO L229 MonitoredProcess]: Starting monitored process 172 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) [2023-12-25 06:19:10,364 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 (172)] Waiting until timeout for monitored process Received shutdown request... [2023-12-25 06:19:13,626 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 [2023-12-25 06:19:13,669 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 (172)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:19:14,656 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 [2023-12-25 06:19:14,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 06:19:14,689 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:19:14,711 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 (172)] Ended with exit code 0 [2023-12-25 06:19:14,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /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 [2023-12-25 06:19:14,890 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 591 with TraceHistMax 84,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [698808990] and IpTcStrategyModuleCvc4 [172626588]. [2023-12-25 06:19:14,895 INFO L445 BasicCegarLoop]: Path program histogram: [83, 1, 1, 1, 1] [2023-12-25 06:19:14,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:19:14,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:19:14 BoogieIcfgContainer [2023-12-25 06:19:14,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:19:14,899 INFO L158 Benchmark]: Toolchain (without parser) took 834099.03ms. Allocated memory was 244.3MB in the beginning and 508.6MB in the end (delta: 264.2MB). Free memory was 192.0MB in the beginning and 104.3MB in the end (delta: 87.7MB). Peak memory consumption was 352.7MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 202.4MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.46ms. Allocated memory is still 244.3MB. Free memory was 191.7MB in the beginning and 180.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.63ms. Allocated memory is still 244.3MB. Free memory was 180.7MB in the beginning and 179.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: Boogie Preprocessor took 48.12ms. Allocated memory is still 244.3MB. Free memory was 179.1MB in the beginning and 177.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: RCFGBuilder took 249.98ms. Allocated memory is still 244.3MB. Free memory was 177.6MB in the beginning and 166.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,899 INFO L158 Benchmark]: TraceAbstraction took 833583.32ms. Allocated memory was 244.3MB in the beginning and 508.6MB in the end (delta: 264.2MB). Free memory was 165.5MB in the beginning and 104.3MB in the end (delta: 61.2MB). Peak memory consumption was 326.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:14,900 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 202.4MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.46ms. Allocated memory is still 244.3MB. Free memory was 191.7MB in the beginning and 180.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.63ms. Allocated memory is still 244.3MB. Free memory was 180.7MB in the beginning and 179.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.12ms. Allocated memory is still 244.3MB. Free memory was 179.1MB in the beginning and 177.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 249.98ms. Allocated memory is still 244.3MB. Free memory was 177.6MB in the beginning and 166.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 833583.32ms. Allocated memory was 244.3MB in the beginning and 508.6MB in the end (delta: 264.2MB). Free memory was 165.5MB in the beginning and 104.3MB in the end (delta: 61.2MB). Peak memory consumption was 326.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 35). Cancelled while NwaCegarLoop was analyzing trace of length 591 with TraceHistMax 84,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [698808990] and IpTcStrategyModuleCvc4 [172626588]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 833.5s, OverallIterations: 87, TraceHistogramMax: 84, PathProgramHistogramMax: 83, EmptinessCheckTime: 0.1s, AutomataDifference: 241.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13962 SdHoareTripleChecker+Valid, 130.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10377 mSDsluCounter, 403356 SdHoareTripleChecker+Invalid, 116.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 395914 mSDsCounter, 1644 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 227291 IncrementalHoareTripleChecker+Invalid, 228935 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1644 mSolverCounterUnsat, 7442 mSDtfsCounter, 227291 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53887 GetRequests, 46329 SyntacticMatches, 84 SemanticMatches, 7474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97793 ImplicationChecksByTransitivity, 207.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=261occurred in iteration=86, InterpolantAutomatonStates: 3905, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 86 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.6s SsaConstructionTime, 102.8s SatisfiabilityAnalysisTime, 363.9s InterpolantComputationTime, 49220 NumberOfCodeBlocks, 49220 NumberOfCodeBlocksAsserted, 3532 NumberOfCheckSat, 49050 ConstructedInterpolants, 0 QuantifiedInterpolants, 134106 SizeOfPredicates, 7145 NumberOfNonLiveVariables, 79527 ConjunctsInSsa, 14608 ConjunctsInUnsatCore, 170 InterpolantComputations, 2 PerfectInterpolantSequences, 745849/1313592 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown