/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/eca-rers2012/Problem03_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:34:24,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:34:24,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 03:34:24,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:34:24,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:34:24,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:34:24,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:34:24,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:34:24,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:34:24,894 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:34:24,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:34:24,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:34:24,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:34:24,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:34:24,896 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:34:24,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:34:24,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:34:24,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:34:24,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:34:24,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:34:24,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:34:24,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:34:24,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:34:24,898 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:34:24,898 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:34:24,898 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:34:24,899 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:34:24,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:34:24,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:34:24,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:34:24,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:34:24,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:34:24,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:34:24,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:34:24,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:24,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:34:24,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:34:24,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:34:24,902 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:34:24,902 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:34:24,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:34:24,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:34:24,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:34:24,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:34:24,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:34:24,913 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:34:24,913 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:34:25,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:34:25,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:34:25,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:34:25,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:34:25,176 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:34:25,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2023-12-22 03:34:26,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:34:26,524 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:34:26,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2023-12-22 03:34:26,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbc22ced0/3e50df2f379243dfa8db4bb3f19b1c2e/FLAG6225b8ba3 [2023-12-22 03:34:26,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbc22ced0/3e50df2f379243dfa8db4bb3f19b1c2e [2023-12-22 03:34:26,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:34:26,551 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:34:26,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:26,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:34:26,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:34:26,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:26" (1/1) ... [2023-12-22 03:34:26,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309a8745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:26, skipping insertion in model container [2023-12-22 03:34:26,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:26" (1/1) ... [2023-12-22 03:34:26,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:34:27,042 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09.c[54191,54204] [2023-12-22 03:34:27,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:27,097 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:34:27,226 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09.c[54191,54204] [2023-12-22 03:34:27,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:27,256 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:34:27,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27 WrapperNode [2023-12-22 03:34:27,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:27,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:27,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:34:27,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:34:27,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,399 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:34:27,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:27,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:34:27,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:34:27,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:34:27,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,467 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 03:34:27,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:34:27,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:34:27,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:34:27,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:34:27,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (1/1) ... [2023-12-22 03:34:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:27,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:34:27,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 03:34:27,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 03:34:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:34:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:34:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:34:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:34:27,765 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:34:27,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:34:29,325 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:34:29,385 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:34:29,385 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:34:29,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:29 BoogieIcfgContainer [2023-12-22 03:34:29,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:34:29,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:34:29,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:34:29,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:34:29,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:34:26" (1/3) ... [2023-12-22 03:34:29,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71312842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:29, skipping insertion in model container [2023-12-22 03:34:29,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:27" (2/3) ... [2023-12-22 03:34:29,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71312842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:29, skipping insertion in model container [2023-12-22 03:34:29,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:29" (3/3) ... [2023-12-22 03:34:29,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2023-12-22 03:34:29,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:34:29,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:34:29,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:34:29,460 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;@74ff0f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:34:29,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:34:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 03:34:29,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:29,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:29,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:29,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1777658031, now seen corresponding path program 1 times [2023-12-22 03:34:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168875267] [2023-12-22 03:34:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:29,502 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 [2023-12-22 03:34:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:29,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:29,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 03:34:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:29,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:34:29,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:29,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:29,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168875267] [2023-12-22 03:34:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168875267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953373536] [2023-12-22 03:34:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:34:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:29,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:34:29,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:29,795 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:29,824 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:34:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:34:29,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-22 03:34:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:29,833 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:34:29,833 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:34:29,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:29,838 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:34:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:34:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:34:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:34:29,873 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 147 [2023-12-22 03:34:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:29,874 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:34:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:34:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 03:34:29,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:29,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:29,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 03:34:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:30,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:30,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash -114788689, now seen corresponding path program 1 times [2023-12-22 03:34:30,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:30,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494381792] [2023-12-22 03:34:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:30,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:30,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:30,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 03:34:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:30,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:34:30,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:47,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:47,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494381792] [2023-12-22 03:34:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494381792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:34:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407232260] [2023-12-22 03:34:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:47,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:34:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:34:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:34:47,562 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:54,535 INFO L93 Difference]: Finished difference Result 999 states and 1699 transitions. [2023-12-22 03:34:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 03:34:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-22 03:34:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:54,542 INFO L225 Difference]: With dead ends: 999 [2023-12-22 03:34:54,542 INFO L226 Difference]: Without dead ends: 762 [2023-12-22 03:34:54,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-22 03:34:54,544 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1351 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4740 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:54,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 366 Invalid, 4970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [230 Valid, 4740 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-22 03:34:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-22 03:34:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 759. [2023-12-22 03:34:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.287598944591029) internal successors, (976), 758 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 976 transitions. [2023-12-22 03:34:54,582 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 976 transitions. Word has length 147 [2023-12-22 03:34:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:54,583 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 976 transitions. [2023-12-22 03:34:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 976 transitions. [2023-12-22 03:34:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-22 03:34:54,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:54,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:54,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:54,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:54,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:54,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash 255970944, now seen corresponding path program 1 times [2023-12-22 03:34:54,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:54,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553735605] [2023-12-22 03:34:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:54,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:54,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:54,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 03:34:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:54,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:34:54,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:07,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:07,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553735605] [2023-12-22 03:35:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553735605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:07,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:35:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609220661] [2023-12-22 03:35:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:07,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:35:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:35:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:35:07,247 INFO L87 Difference]: Start difference. First operand 759 states and 976 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:09,525 INFO L93 Difference]: Finished difference Result 1342 states and 1906 transitions. [2023-12-22 03:35:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 03:35:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-22 03:35:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:09,539 INFO L225 Difference]: With dead ends: 1342 [2023-12-22 03:35:09,539 INFO L226 Difference]: Without dead ends: 900 [2023-12-22 03:35:09,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:35:09,545 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 481 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:09,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 267 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 03:35:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2023-12-22 03:35:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 900. [2023-12-22 03:35:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.2491657397107898) internal successors, (1123), 899 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1123 transitions. [2023-12-22 03:35:09,601 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1123 transitions. Word has length 154 [2023-12-22 03:35:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:09,602 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1123 transitions. [2023-12-22 03:35:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1123 transitions. [2023-12-22 03:35:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-22 03:35:09,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:09,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:09,614 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 [2023-12-22 03:35:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:09,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:09,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1373597537, now seen corresponding path program 1 times [2023-12-22 03:35:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487728256] [2023-12-22 03:35:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:09,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:09,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:09,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 03:35:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:09,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:09,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:10,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:10,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487728256] [2023-12-22 03:35:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487728256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523873945] [2023-12-22 03:35:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:10,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:10,085 INFO L87 Difference]: Start difference. First operand 900 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:11,025 INFO L93 Difference]: Finished difference Result 1769 states and 2409 transitions. [2023-12-22 03:35:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-22 03:35:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:11,029 INFO L225 Difference]: With dead ends: 1769 [2023-12-22 03:35:11,029 INFO L226 Difference]: Without dead ends: 1327 [2023-12-22 03:35:11,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:11,030 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 108 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:11,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-12-22 03:35:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1313. [2023-12-22 03:35:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.3048780487804879) internal successors, (1712), 1312 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1712 transitions. [2023-12-22 03:35:11,049 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1712 transitions. Word has length 162 [2023-12-22 03:35:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:11,050 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1712 transitions. [2023-12-22 03:35:11,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1712 transitions. [2023-12-22 03:35:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-22 03:35:11,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:11,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:11,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:11,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:11,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -305300235, now seen corresponding path program 1 times [2023-12-22 03:35:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367169346] [2023-12-22 03:35:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:11,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:11,257 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) [2023-12-22 03:35:11,288 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 [2023-12-22 03:35:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:11,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:11,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:11,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:11,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367169346] [2023-12-22 03:35:11,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367169346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:11,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:11,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292506705] [2023-12-22 03:35:11,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:11,387 INFO L87 Difference]: Start difference. First operand 1313 states and 1712 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:11,727 INFO L93 Difference]: Finished difference Result 3012 states and 4177 transitions. [2023-12-22 03:35:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:11,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2023-12-22 03:35:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:11,732 INFO L225 Difference]: With dead ends: 3012 [2023-12-22 03:35:11,732 INFO L226 Difference]: Without dead ends: 2157 [2023-12-22 03:35:11,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:11,734 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 359 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:11,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 553 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 03:35:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2023-12-22 03:35:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2155. [2023-12-22 03:35:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2154 states have (on average 1.3597957288765088) internal successors, (2929), 2154 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2929 transitions. [2023-12-22 03:35:11,760 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2929 transitions. Word has length 167 [2023-12-22 03:35:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 2929 transitions. [2023-12-22 03:35:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2929 transitions. [2023-12-22 03:35:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-22 03:35:11,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:11,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:11,772 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 [2023-12-22 03:35:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:11,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:11,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1278892400, now seen corresponding path program 2 times [2023-12-22 03:35:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412311617] [2023-12-22 03:35:11,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 03:35:11,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:11,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:11,975 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 (7)] Waiting until timeout for monitored process [2023-12-22 03:35:12,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 03:35:12,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 03:35:12,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:12,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:12,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:12,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:12,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412311617] [2023-12-22 03:35:12,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412311617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:12,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:12,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053467852] [2023-12-22 03:35:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:12,103 INFO L87 Difference]: Start difference. First operand 2155 states and 2929 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:12,829 INFO L93 Difference]: Finished difference Result 5494 states and 7769 transitions. [2023-12-22 03:35:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:12,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-22 03:35:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:12,838 INFO L225 Difference]: With dead ends: 5494 [2023-12-22 03:35:12,838 INFO L226 Difference]: Without dead ends: 3797 [2023-12-22 03:35:12,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:12,841 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 266 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:12,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 348 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2023-12-22 03:35:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3794. [2023-12-22 03:35:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3793 states have (on average 1.3361455312417612) internal successors, (5068), 3793 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5068 transitions. [2023-12-22 03:35:12,888 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5068 transitions. Word has length 169 [2023-12-22 03:35:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:12,888 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 5068 transitions. [2023-12-22 03:35:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5068 transitions. [2023-12-22 03:35:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-22 03:35:12,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:12,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:12,895 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 (7)] Ended with exit code 0 [2023-12-22 03:35:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:13,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:13,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1181086879, now seen corresponding path program 1 times [2023-12-22 03:35:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015105982] [2023-12-22 03:35:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:13,098 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 [2023-12-22 03:35:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:13,113 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) [2023-12-22 03:35:13,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 03:35:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:13,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:13,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:13,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:13,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:13,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015105982] [2023-12-22 03:35:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015105982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:13,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:13,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635692303] [2023-12-22 03:35:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:13,321 INFO L87 Difference]: Start difference. First operand 3794 states and 5068 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:14,495 INFO L93 Difference]: Finished difference Result 13727 states and 18764 transitions. [2023-12-22 03:35:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:14,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-22 03:35:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:14,522 INFO L225 Difference]: With dead ends: 13727 [2023-12-22 03:35:14,522 INFO L226 Difference]: Without dead ends: 10391 [2023-12-22 03:35:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:14,560 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 554 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 576 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10391 states. [2023-12-22 03:35:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10391 to 10377. [2023-12-22 03:35:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10377 states, 10376 states have (on average 1.3290285273708558) internal successors, (13790), 10376 states have internal predecessors, (13790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10377 states to 10377 states and 13790 transitions. [2023-12-22 03:35:14,705 INFO L78 Accepts]: Start accepts. Automaton has 10377 states and 13790 transitions. Word has length 175 [2023-12-22 03:35:14,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:14,705 INFO L495 AbstractCegarLoop]: Abstraction has 10377 states and 13790 transitions. [2023-12-22 03:35:14,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10377 states and 13790 transitions. [2023-12-22 03:35:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-22 03:35:14,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:14,713 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:14,728 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 [2023-12-22 03:35:14,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 03:35:14,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:14,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1966414666, now seen corresponding path program 1 times [2023-12-22 03:35:14,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:14,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257728068] [2023-12-22 03:35:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:14,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:14,922 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 (9)] Waiting until timeout for monitored process [2023-12-22 03:35:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:15,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:15,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-22 03:35:15,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:15,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:15,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257728068] [2023-12-22 03:35:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257728068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:15,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:15,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974475941] [2023-12-22 03:35:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:15,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:15,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:15,116 INFO L87 Difference]: Start difference. First operand 10377 states and 13790 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:16,242 INFO L93 Difference]: Finished difference Result 27933 states and 37688 transitions. [2023-12-22 03:35:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-22 03:35:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:16,300 INFO L225 Difference]: With dead ends: 27933 [2023-12-22 03:35:16,300 INFO L226 Difference]: Without dead ends: 18013 [2023-12-22 03:35:16,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:16,312 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 651 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:16,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 47 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:35:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18013 states. [2023-12-22 03:35:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18013 to 16170. [2023-12-22 03:35:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16170 states, 16169 states have (on average 1.2739810748964067) internal successors, (20599), 16169 states have internal predecessors, (20599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16170 states to 16170 states and 20599 transitions. [2023-12-22 03:35:16,498 INFO L78 Accepts]: Start accepts. Automaton has 16170 states and 20599 transitions. Word has length 179 [2023-12-22 03:35:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:16,499 INFO L495 AbstractCegarLoop]: Abstraction has 16170 states and 20599 transitions. [2023-12-22 03:35:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16170 states and 20599 transitions. [2023-12-22 03:35:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-22 03:35:16,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:16,510 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:16,528 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 (9)] Ended with exit code 0 [2023-12-22 03:35:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:16,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:16,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1482398947, now seen corresponding path program 1 times [2023-12-22 03:35:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334756760] [2023-12-22 03:35:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:16,715 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 [2023-12-22 03:35:16,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:16,716 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) [2023-12-22 03:35:16,718 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 [2023-12-22 03:35:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:16,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:16,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-22 03:35:16,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:16,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:16,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334756760] [2023-12-22 03:35:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334756760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:16,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:16,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134314101] [2023-12-22 03:35:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:16,866 INFO L87 Difference]: Start difference. First operand 16170 states and 20599 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:17,772 INFO L93 Difference]: Finished difference Result 37179 states and 47388 transitions. [2023-12-22 03:35:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:17,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-12-22 03:35:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:17,797 INFO L225 Difference]: With dead ends: 37179 [2023-12-22 03:35:17,797 INFO L226 Difference]: Without dead ends: 21466 [2023-12-22 03:35:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:17,812 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 200 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:17,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 330 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21466 states. [2023-12-22 03:35:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21466 to 21060. [2023-12-22 03:35:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21060 states, 21059 states have (on average 1.2501068426800892) internal successors, (26326), 21059 states have internal predecessors, (26326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21060 states to 21060 states and 26326 transitions. [2023-12-22 03:35:18,154 INFO L78 Accepts]: Start accepts. Automaton has 21060 states and 26326 transitions. Word has length 193 [2023-12-22 03:35:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:18,154 INFO L495 AbstractCegarLoop]: Abstraction has 21060 states and 26326 transitions. [2023-12-22 03:35:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 21060 states and 26326 transitions. [2023-12-22 03:35:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-22 03:35:18,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:18,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:18,178 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 (10)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:18,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 03:35:18,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:18,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash 846347083, now seen corresponding path program 1 times [2023-12-22 03:35:18,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:18,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018312485] [2023-12-22 03:35:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:18,374 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 [2023-12-22 03:35:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:18,375 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:18,377 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 (11)] Waiting until timeout for monitored process [2023-12-22 03:35:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:18,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:18,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-22 03:35:18,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:18,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018312485] [2023-12-22 03:35:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018312485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:18,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963779142] [2023-12-22 03:35:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:18,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:18,560 INFO L87 Difference]: Start difference. First operand 21060 states and 26326 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:19,534 INFO L93 Difference]: Finished difference Result 46943 states and 59114 transitions. [2023-12-22 03:35:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-12-22 03:35:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:19,559 INFO L225 Difference]: With dead ends: 46943 [2023-12-22 03:35:19,559 INFO L226 Difference]: Without dead ends: 26137 [2023-12-22 03:35:19,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:19,579 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:19,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 162 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26137 states. [2023-12-22 03:35:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26137 to 25729. [2023-12-22 03:35:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25729 states, 25728 states have (on average 1.216767723880597) internal successors, (31305), 25728 states have internal predecessors, (31305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25729 states to 25729 states and 31305 transitions. [2023-12-22 03:35:19,840 INFO L78 Accepts]: Start accepts. Automaton has 25729 states and 31305 transitions. Word has length 209 [2023-12-22 03:35:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:19,840 INFO L495 AbstractCegarLoop]: Abstraction has 25729 states and 31305 transitions. [2023-12-22 03:35:19,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25729 states and 31305 transitions. [2023-12-22 03:35:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-22 03:35:19,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:19,851 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:19,868 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 (11)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:20,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:20,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1610338942, now seen corresponding path program 1 times [2023-12-22 03:35:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:20,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669241207] [2023-12-22 03:35:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:20,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:20,057 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) [2023-12-22 03:35:20,088 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 [2023-12-22 03:35:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:20,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:20,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-22 03:35:20,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:20,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669241207] [2023-12-22 03:35:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669241207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511550272] [2023-12-22 03:35:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:20,230 INFO L87 Difference]: Start difference. First operand 25729 states and 31305 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:21,289 INFO L93 Difference]: Finished difference Result 63995 states and 78630 transitions. [2023-12-22 03:35:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:21,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2023-12-22 03:35:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:21,396 INFO L225 Difference]: With dead ends: 63995 [2023-12-22 03:35:21,396 INFO L226 Difference]: Without dead ends: 38520 [2023-12-22 03:35:21,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:21,437 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 185 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:21,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 291 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38520 states. [2023-12-22 03:35:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38520 to 37905. [2023-12-22 03:35:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37905 states, 37904 states have (on average 1.1620145631067962) internal successors, (44045), 37904 states have internal predecessors, (44045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37905 states to 37905 states and 44045 transitions. [2023-12-22 03:35:21,813 INFO L78 Accepts]: Start accepts. Automaton has 37905 states and 44045 transitions. Word has length 214 [2023-12-22 03:35:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:21,814 INFO L495 AbstractCegarLoop]: Abstraction has 37905 states and 44045 transitions. [2023-12-22 03:35:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 37905 states and 44045 transitions. [2023-12-22 03:35:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-22 03:35:21,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:21,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:21,833 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 [2023-12-22 03:35:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 03:35:22,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:22,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1308763974, now seen corresponding path program 1 times [2023-12-22 03:35:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661732641] [2023-12-22 03:35:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:22,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:22,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:22,036 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:22,064 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 (13)] Waiting until timeout for monitored process [2023-12-22 03:35:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:22,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:22,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-22 03:35:22,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:22,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:22,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661732641] [2023-12-22 03:35:22,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661732641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:22,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:22,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834272386] [2023-12-22 03:35:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:22,616 INFO L87 Difference]: Start difference. First operand 37905 states and 44045 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:23,568 INFO L93 Difference]: Finished difference Result 82673 states and 96277 transitions. [2023-12-22 03:35:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2023-12-22 03:35:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:23,613 INFO L225 Difference]: With dead ends: 82673 [2023-12-22 03:35:23,613 INFO L226 Difference]: Without dead ends: 45022 [2023-12-22 03:35:23,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:23,642 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:23,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 230 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45022 states. [2023-12-22 03:35:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45022 to 45010. [2023-12-22 03:35:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45010 states, 45009 states have (on average 1.1503032726787976) internal successors, (51774), 45009 states have internal predecessors, (51774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45010 states to 45010 states and 51774 transitions. [2023-12-22 03:35:24,393 INFO L78 Accepts]: Start accepts. Automaton has 45010 states and 51774 transitions. Word has length 283 [2023-12-22 03:35:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:24,393 INFO L495 AbstractCegarLoop]: Abstraction has 45010 states and 51774 transitions. [2023-12-22 03:35:24,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 45010 states and 51774 transitions. [2023-12-22 03:35:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-22 03:35:24,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:24,405 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:24,411 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 (13)] Ended with exit code 0 [2023-12-22 03:35:24,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:24,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:24,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -660653723, now seen corresponding path program 1 times [2023-12-22 03:35:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198067614] [2023-12-22 03:35:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:24,612 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) [2023-12-22 03:35:24,616 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 [2023-12-22 03:35:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:24,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:35:24,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-22 03:35:25,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:25,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198067614] [2023-12-22 03:35:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198067614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:25,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643924098] [2023-12-22 03:35:25,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:25,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:25,474 INFO L87 Difference]: Start difference. First operand 45010 states and 51774 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:27,491 INFO L93 Difference]: Finished difference Result 165637 states and 191009 transitions. [2023-12-22 03:35:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2023-12-22 03:35:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:27,632 INFO L225 Difference]: With dead ends: 165637 [2023-12-22 03:35:27,633 INFO L226 Difference]: Without dead ends: 120881 [2023-12-22 03:35:27,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:27,649 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 661 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:27,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 68 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 03:35:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120881 states. [2023-12-22 03:35:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120881 to 120471. [2023-12-22 03:35:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120471 states, 120470 states have (on average 1.152361583796796) internal successors, (138825), 120470 states have internal predecessors, (138825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120471 states to 120471 states and 138825 transitions. [2023-12-22 03:35:29,285 INFO L78 Accepts]: Start accepts. Automaton has 120471 states and 138825 transitions. Word has length 298 [2023-12-22 03:35:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:29,285 INFO L495 AbstractCegarLoop]: Abstraction has 120471 states and 138825 transitions. [2023-12-22 03:35:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 120471 states and 138825 transitions. [2023-12-22 03:35:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-22 03:35:29,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:29,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:29,307 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 [2023-12-22 03:35:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 03:35:29,504 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:29,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1059771320, now seen corresponding path program 1 times [2023-12-22 03:35:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562247925] [2023-12-22 03:35:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:29,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:29,509 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 (15)] Waiting until timeout for monitored process [2023-12-22 03:35:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:29,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:29,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-22 03:35:29,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:29,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562247925] [2023-12-22 03:35:29,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562247925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:29,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:29,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:29,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25960574] [2023-12-22 03:35:29,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:29,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:29,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:29,900 INFO L87 Difference]: Start difference. First operand 120471 states and 138825 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:31,658 INFO L93 Difference]: Finished difference Result 279932 states and 322764 transitions. [2023-12-22 03:35:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2023-12-22 03:35:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:31,875 INFO L225 Difference]: With dead ends: 279932 [2023-12-22 03:35:31,875 INFO L226 Difference]: Without dead ends: 159715 [2023-12-22 03:35:31,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:31,907 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 190 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:31,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 361 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159715 states. [2023-12-22 03:35:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159715 to 155230. [2023-12-22 03:35:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155230 states, 155229 states have (on average 1.1508996385984578) internal successors, (178653), 155229 states have internal predecessors, (178653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155230 states to 155230 states and 178653 transitions. [2023-12-22 03:35:34,000 INFO L78 Accepts]: Start accepts. Automaton has 155230 states and 178653 transitions. Word has length 313 [2023-12-22 03:35:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 155230 states and 178653 transitions. [2023-12-22 03:35:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 155230 states and 178653 transitions. [2023-12-22 03:35:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-22 03:35:34,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:34,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:34,025 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 (15)] Ended with exit code 0 [2023-12-22 03:35:34,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:34,226 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:34,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1013359525, now seen corresponding path program 1 times [2023-12-22 03:35:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806162675] [2023-12-22 03:35:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:34,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:34,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:34,229 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) [2023-12-22 03:35:34,233 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 [2023-12-22 03:35:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:34,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-22 03:35:34,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:34,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806162675] [2023-12-22 03:35:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806162675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635231111] [2023-12-22 03:35:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:34,688 INFO L87 Difference]: Start difference. First operand 155230 states and 178653 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:36,394 INFO L93 Difference]: Finished difference Result 296440 states and 342923 transitions. [2023-12-22 03:35:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2023-12-22 03:35:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:36,588 INFO L225 Difference]: With dead ends: 296440 [2023-12-22 03:35:36,588 INFO L226 Difference]: Without dead ends: 128054 [2023-12-22 03:35:36,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:36,661 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 165 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:36,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 279 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128054 states. [2023-12-22 03:35:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128054 to 125166. [2023-12-22 03:35:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125166 states, 125165 states have (on average 1.0966883713498183) internal successors, (137267), 125165 states have internal predecessors, (137267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125166 states to 125166 states and 137267 transitions. [2023-12-22 03:35:38,256 INFO L78 Accepts]: Start accepts. Automaton has 125166 states and 137267 transitions. Word has length 322 [2023-12-22 03:35:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:38,256 INFO L495 AbstractCegarLoop]: Abstraction has 125166 states and 137267 transitions. [2023-12-22 03:35:38,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 125166 states and 137267 transitions. [2023-12-22 03:35:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-22 03:35:38,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:38,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:38,285 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 [2023-12-22 03:35:38,471 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 [2023-12-22 03:35:38,472 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:38,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:38,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2077196617, now seen corresponding path program 1 times [2023-12-22 03:35:38,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:38,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759804980] [2023-12-22 03:35:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:38,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:38,475 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:38,477 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 (17)] Waiting until timeout for monitored process [2023-12-22 03:35:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:38,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:35:38,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-22 03:35:39,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:39,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:39,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759804980] [2023-12-22 03:35:39,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759804980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:39,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:39,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340465478] [2023-12-22 03:35:39,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:39,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:39,624 INFO L87 Difference]: Start difference. First operand 125166 states and 137267 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:40,842 INFO L93 Difference]: Finished difference Result 252527 states and 276816 transitions. [2023-12-22 03:35:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2023-12-22 03:35:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:41,000 INFO L225 Difference]: With dead ends: 252527 [2023-12-22 03:35:41,000 INFO L226 Difference]: Without dead ends: 127603 [2023-12-22 03:35:41,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:41,226 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 107 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:41,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 182 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127603 states. [2023-12-22 03:35:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127603 to 127399. [2023-12-22 03:35:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127399 states, 127398 states have (on average 1.0956294447322563) internal successors, (139581), 127398 states have internal predecessors, (139581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127399 states to 127399 states and 139581 transitions. [2023-12-22 03:35:42,924 INFO L78 Accepts]: Start accepts. Automaton has 127399 states and 139581 transitions. Word has length 327 [2023-12-22 03:35:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:42,924 INFO L495 AbstractCegarLoop]: Abstraction has 127399 states and 139581 transitions. [2023-12-22 03:35:42,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 127399 states and 139581 transitions. [2023-12-22 03:35:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-22 03:35:42,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:42,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:42,962 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 (17)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:43,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:43,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1025513407, now seen corresponding path program 1 times [2023-12-22 03:35:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058872230] [2023-12-22 03:35:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:43,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:43,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:43,160 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) [2023-12-22 03:35:43,162 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 [2023-12-22 03:35:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:43,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:43,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-22 03:35:43,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:43,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:43,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058872230] [2023-12-22 03:35:43,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058872230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:43,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:43,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:43,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128568006] [2023-12-22 03:35:43,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:43,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:43,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:43,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:43,530 INFO L87 Difference]: Start difference. First operand 127399 states and 139581 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:45,133 INFO L93 Difference]: Finished difference Result 297620 states and 327026 transitions. [2023-12-22 03:35:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2023-12-22 03:35:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:45,341 INFO L225 Difference]: With dead ends: 297620 [2023-12-22 03:35:45,341 INFO L226 Difference]: Without dead ends: 170463 [2023-12-22 03:35:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:45,386 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 223 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:45,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 233 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170463 states. [2023-12-22 03:35:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170463 to 164753. [2023-12-22 03:35:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164753 states, 164752 states have (on average 1.0809276973875885) internal successors, (178085), 164752 states have internal predecessors, (178085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164753 states to 164753 states and 178085 transitions. [2023-12-22 03:35:47,675 INFO L78 Accepts]: Start accepts. Automaton has 164753 states and 178085 transitions. Word has length 328 [2023-12-22 03:35:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 164753 states and 178085 transitions. [2023-12-22 03:35:47,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 164753 states and 178085 transitions. [2023-12-22 03:35:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-22 03:35:47,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:47,691 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:47,697 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 (18)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 03:35:47,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:47,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -403667958, now seen corresponding path program 1 times [2023-12-22 03:35:47,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:47,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119909030] [2023-12-22 03:35:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:47,897 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 [2023-12-22 03:35:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:47,899 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:47,900 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 (19)] Waiting until timeout for monitored process [2023-12-22 03:35:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:48,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:35:48,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 61 proven. 182 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:50,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 61 proven. 182 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:53,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119909030] [2023-12-22 03:35:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119909030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:53,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-22 03:35:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289545956] [2023-12-22 03:35:53,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 03:35:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 03:35:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 03:35:53,617 INFO L87 Difference]: Start difference. First operand 164753 states and 178085 transitions. Second operand has 8 states, 8 states have (on average 62.375) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:56,670 INFO L93 Difference]: Finished difference Result 330414 states and 357094 transitions. [2023-12-22 03:35:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:35:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 62.375) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-12-22 03:35:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:56,849 INFO L225 Difference]: With dead ends: 330414 [2023-12-22 03:35:56,849 INFO L226 Difference]: Without dead ends: 165903 [2023-12-22 03:35:56,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:35:56,921 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 564 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:56,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 250 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 03:35:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165903 states. [2023-12-22 03:35:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165903 to 165161. [2023-12-22 03:35:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165161 states, 165160 states have (on average 1.0807822717364979) internal successors, (178502), 165160 states have internal predecessors, (178502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165161 states to 165161 states and 178502 transitions. [2023-12-22 03:35:59,391 INFO L78 Accepts]: Start accepts. Automaton has 165161 states and 178502 transitions. Word has length 332 [2023-12-22 03:35:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:59,391 INFO L495 AbstractCegarLoop]: Abstraction has 165161 states and 178502 transitions. [2023-12-22 03:35:59,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.375) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 165161 states and 178502 transitions. [2023-12-22 03:35:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-22 03:35:59,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:59,406 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:59,420 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 (19)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:59,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:59,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:59,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash -546158934, now seen corresponding path program 1 times [2023-12-22 03:35:59,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:59,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758015404] [2023-12-22 03:35:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:59,623 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 [2023-12-22 03:35:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:59,624 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) [2023-12-22 03:35:59,628 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 [2023-12-22 03:35:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:59,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:59,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-22 03:35:59,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:59,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758015404] [2023-12-22 03:35:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758015404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843128452] [2023-12-22 03:35:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:59,931 INFO L87 Difference]: Start difference. First operand 165161 states and 178502 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:01,977 INFO L93 Difference]: Finished difference Result 327543 states and 354229 transitions. [2023-12-22 03:36:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2023-12-22 03:36:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:02,193 INFO L225 Difference]: With dead ends: 327543 [2023-12-22 03:36:02,193 INFO L226 Difference]: Without dead ends: 163844 [2023-12-22 03:36:02,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:02,276 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 353 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:02,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 137 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:36:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163844 states. [2023-12-22 03:36:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163844 to 162116. [2023-12-22 03:36:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162116 states, 162115 states have (on average 1.0808253400363939) internal successors, (175218), 162115 states have internal predecessors, (175218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162116 states to 162116 states and 175218 transitions. [2023-12-22 03:36:04,696 INFO L78 Accepts]: Start accepts. Automaton has 162116 states and 175218 transitions. Word has length 338 [2023-12-22 03:36:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:04,697 INFO L495 AbstractCegarLoop]: Abstraction has 162116 states and 175218 transitions. [2023-12-22 03:36:04,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 162116 states and 175218 transitions. [2023-12-22 03:36:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-22 03:36:04,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:04,715 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:04,732 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 (20)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:04,919 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 [2023-12-22 03:36:04,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:04,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash 454617181, now seen corresponding path program 1 times [2023-12-22 03:36:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:04,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468309360] [2023-12-22 03:36:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:04,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:04,923 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:04,949 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 (21)] Waiting until timeout for monitored process [2023-12-22 03:36:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:05,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:05,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-22 03:36:05,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:05,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468309360] [2023-12-22 03:36:05,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468309360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:05,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:05,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:05,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548122692] [2023-12-22 03:36:05,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:05,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:05,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:05,737 INFO L87 Difference]: Start difference. First operand 162116 states and 175218 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:08,180 INFO L93 Difference]: Finished difference Result 365949 states and 397548 transitions. [2023-12-22 03:36:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2023-12-22 03:36:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:08,477 INFO L225 Difference]: With dead ends: 365949 [2023-12-22 03:36:08,477 INFO L226 Difference]: Without dead ends: 204483 [2023-12-22 03:36:08,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:08,552 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 313 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:08,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 168 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:36:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204483 states. [2023-12-22 03:36:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204483 to 189385. [2023-12-22 03:36:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189385 states, 189384 states have (on average 1.0795104127064588) internal successors, (204442), 189384 states have internal predecessors, (204442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189385 states to 189385 states and 204442 transitions. [2023-12-22 03:36:11,272 INFO L78 Accepts]: Start accepts. Automaton has 189385 states and 204442 transitions. Word has length 347 [2023-12-22 03:36:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:11,273 INFO L495 AbstractCegarLoop]: Abstraction has 189385 states and 204442 transitions. [2023-12-22 03:36:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 189385 states and 204442 transitions. [2023-12-22 03:36:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-22 03:36:11,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:11,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:11,291 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 (21)] Ended with exit code 0 [2023-12-22 03:36:11,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:11,489 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -317894339, now seen corresponding path program 1 times [2023-12-22 03:36:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:11,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538289592] [2023-12-22 03:36:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:11,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:11,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:11,493 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) [2023-12-22 03:36:11,497 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 [2023-12-22 03:36:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:11,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:36:11,668 INFO L285 TraceCheckSpWp]: Computing forward predicates...