/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/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:37:54,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:37:54,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:37:54,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:37:54,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:37:54,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:37:54,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:37:54,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:37:54,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:37:54,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:37:54,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:37:54,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:37:54,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:37:54,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:37:54,646 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:37:54,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:37:54,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:37:54,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:37:54,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:37:54,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:37:54,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:37:54,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:37:54,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:37:54,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:37:54,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:37:54,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:37:54,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:37:54,654 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:37:54,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:37:54,656 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:37:54,656 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:37:54,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:37:54,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:37:54,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:37:54,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:37:54,877 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:37:54,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-25 07:37:55,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:37:56,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:37:56,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-25 07:37:56,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326c84c52/9effb060c57b44e780cd9fe47c5cbd79/FLAGbfd50dd5f [2023-12-25 07:37:56,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326c84c52/9effb060c57b44e780cd9fe47c5cbd79 [2023-12-25 07:37:56,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:37:56,527 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:37:56,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:37:56,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:37:56,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:37:56,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1395e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56, skipping insertion in model container [2023-12-25 07:37:56,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:37:56,707 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-12-25 07:37:56,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:37:56,723 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:37:56,768 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-12-25 07:37:56,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:37:56,781 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:37:56,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56 WrapperNode [2023-12-25 07:37:56,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:37:56,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:37:56,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:37:56,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:37:56,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,840 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 357 [2023-12-25 07:37:56,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:37:56,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:37:56,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:37:56,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:37:56,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,870 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 07:37:56,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:37:56,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:37:56,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:37:56,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:37:56,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (1/1) ... [2023-12-25 07:37:56,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:37:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:37:56,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 07:37:56,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 07:37:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:37:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:37:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:37:57,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:37:57,097 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:37:57,101 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:37:57,502 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:37:57,525 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:37:57,525 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:37:57,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:37:57 BoogieIcfgContainer [2023-12-25 07:37:57,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:37:57,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:37:57,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:37:57,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:37:57,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:37:56" (1/3) ... [2023-12-25 07:37:57,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709beed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:37:57, skipping insertion in model container [2023-12-25 07:37:57,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:37:56" (2/3) ... [2023-12-25 07:37:57,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709beed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:37:57, skipping insertion in model container [2023-12-25 07:37:57,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:37:57" (3/3) ... [2023-12-25 07:37:57,531 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-25 07:37:57,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:37:57,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:37:57,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:37:57,578 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;@3b95b3e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:37:57,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:37:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 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) [2023-12-25 07:37:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-25 07:37:57,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:57,586 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] [2023-12-25 07:37:57,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:57,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1646132803, now seen corresponding path program 1 times [2023-12-25 07:37:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:57,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326495933] [2023-12-25 07:37:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:57,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:57,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 07:37:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:57,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:37:57,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:57,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:57,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326495933] [2023-12-25 07:37:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326495933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:57,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:57,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:37:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776644782] [2023-12-25 07:37:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:57,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:37:57,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:37:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:37:57,752 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 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) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-12-25 07:37:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:57,775 INFO L93 Difference]: Finished difference Result 159 states and 272 transitions. [2023-12-25 07:37:57,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:37:57,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2023-12-25 07:37:57,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:57,783 INFO L225 Difference]: With dead ends: 159 [2023-12-25 07:37:57,783 INFO L226 Difference]: Without dead ends: 95 [2023-12-25 07:37:57,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:37:57,805 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:57,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-25 07:37:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-25 07:37:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 94 states have internal predecessors, (165), 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) [2023-12-25 07:37:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 165 transitions. [2023-12-25 07:37:57,828 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 165 transitions. Word has length 30 [2023-12-25 07:37:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:57,828 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 165 transitions. [2023-12-25 07:37:57,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-12-25 07:37:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 165 transitions. [2023-12-25 07:37:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-25 07:37:57,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:57,830 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] [2023-12-25 07:37:57,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 07:37:58,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:58,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:58,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash 277095231, now seen corresponding path program 1 times [2023-12-25 07:37:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255190546] [2023-12-25 07:37:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:58,034 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 [2023-12-25 07:37:58,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:58,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:58,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 07:37:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:58,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:37:58,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:58,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:58,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255190546] [2023-12-25 07:37:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255190546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:37:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352019360] [2023-12-25 07:37:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:37:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:37:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:37:58,164 INFO L87 Difference]: Start difference. First operand 95 states and 165 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-12-25 07:37:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:58,213 INFO L93 Difference]: Finished difference Result 157 states and 265 transitions. [2023-12-25 07:37:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:37:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2023-12-25 07:37:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:58,214 INFO L225 Difference]: With dead ends: 157 [2023-12-25 07:37:58,214 INFO L226 Difference]: Without dead ends: 95 [2023-12-25 07:37:58,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:37:58,215 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-25 07:37:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-25 07:37:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 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) [2023-12-25 07:37:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2023-12-25 07:37:58,227 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 30 [2023-12-25 07:37:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:58,227 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2023-12-25 07:37:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-12-25 07:37:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2023-12-25 07:37:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 07:37:58,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:58,229 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] [2023-12-25 07:37:58,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:58,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:58,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 167424512, now seen corresponding path program 1 times [2023-12-25 07:37:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084284627] [2023-12-25 07:37:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:58,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:58,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:58,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 07:37:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:58,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:58,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:58,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:58,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084284627] [2023-12-25 07:37:58,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084284627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:58,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:58,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74384869] [2023-12-25 07:37:58,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:58,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:58,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:58,584 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-12-25 07:37:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:58,608 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2023-12-25 07:37:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2023-12-25 07:37:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:58,610 INFO L225 Difference]: With dead ends: 205 [2023-12-25 07:37:58,610 INFO L226 Difference]: Without dead ends: 146 [2023-12-25 07:37:58,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:58,612 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:58,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-25 07:37:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-12-25 07:37:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4965034965034965) internal successors, (214), 143 states have internal predecessors, (214), 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) [2023-12-25 07:37:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 214 transitions. [2023-12-25 07:37:58,622 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 214 transitions. Word has length 61 [2023-12-25 07:37:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:58,623 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 214 transitions. [2023-12-25 07:37:58,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-12-25 07:37:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 214 transitions. [2023-12-25 07:37:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 07:37:58,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:58,624 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] [2023-12-25 07:37:58,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:58,828 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 [2023-12-25 07:37:58,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:58,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash -267550305, now seen corresponding path program 1 times [2023-12-25 07:37:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203008643] [2023-12-25 07:37:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:58,831 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) [2023-12-25 07:37:58,856 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 [2023-12-25 07:37:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:58,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:58,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:58,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:58,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203008643] [2023-12-25 07:37:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203008643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63103792] [2023-12-25 07:37:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:58,961 INFO L87 Difference]: Start difference. First operand 144 states and 214 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-12-25 07:37:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:58,979 INFO L93 Difference]: Finished difference Result 344 states and 542 transitions. [2023-12-25 07:37:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2023-12-25 07:37:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:58,981 INFO L225 Difference]: With dead ends: 344 [2023-12-25 07:37:58,981 INFO L226 Difference]: Without dead ends: 236 [2023-12-25 07:37:58,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:58,982 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 77 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:58,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-25 07:37:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2023-12-25 07:37:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 states have internal predecessors, (361), 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) [2023-12-25 07:37:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2023-12-25 07:37:58,990 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 61 [2023-12-25 07:37:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:58,990 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2023-12-25 07:37:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-12-25 07:37:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2023-12-25 07:37:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 07:37:58,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:58,991 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] [2023-12-25 07:37:59,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 07:37:59,194 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 [2023-12-25 07:37:59,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:59,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1476462402, now seen corresponding path program 1 times [2023-12-25 07:37:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794292350] [2023-12-25 07:37:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:59,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:59,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:59,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 07:37:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:59,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:37:59,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:59,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:59,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794292350] [2023-12-25 07:37:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794292350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:59,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:59,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 07:37:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778002146] [2023-12-25 07:37:59,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 07:37:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 07:37:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:37:59,888 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2023-12-25 07:38:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:00,001 INFO L93 Difference]: Finished difference Result 1422 states and 2311 transitions. [2023-12-25 07:38:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 07:38:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2023-12-25 07:38:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:00,007 INFO L225 Difference]: With dead ends: 1422 [2023-12-25 07:38:00,007 INFO L226 Difference]: Without dead ends: 1224 [2023-12-25 07:38:00,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:38:00,011 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 776 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:00,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 701 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:38:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-25 07:38:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 430. [2023-12-25 07:38:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.578088578088578) internal successors, (677), 429 states have internal predecessors, (677), 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) [2023-12-25 07:38:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 677 transitions. [2023-12-25 07:38:00,053 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 677 transitions. Word has length 61 [2023-12-25 07:38:00,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:00,054 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 677 transitions. [2023-12-25 07:38:00,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2023-12-25 07:38:00,054 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 677 transitions. [2023-12-25 07:38:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-25 07:38:00,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:00,055 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] [2023-12-25 07:38:00,068 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 (6)] Ended with exit code 0 [2023-12-25 07:38:00,255 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 [2023-12-25 07:38:00,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:00,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1461246200, now seen corresponding path program 1 times [2023-12-25 07:38:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:00,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47928289] [2023-12-25 07:38:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:00,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:00,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:00,258 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) [2023-12-25 07:38:00,282 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 [2023-12-25 07:38:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:00,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:38:00,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:00,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:00,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47928289] [2023-12-25 07:38:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47928289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:38:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884120897] [2023-12-25 07:38:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:38:00,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:38:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:00,333 INFO L87 Difference]: Start difference. First operand 430 states and 677 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-12-25 07:38:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:00,356 INFO L93 Difference]: Finished difference Result 456 states and 710 transitions. [2023-12-25 07:38:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:38:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2023-12-25 07:38:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:00,359 INFO L225 Difference]: With dead ends: 456 [2023-12-25 07:38:00,359 INFO L226 Difference]: Without dead ends: 454 [2023-12-25 07:38:00,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:00,360 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:00,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 380 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-25 07:38:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 446. [2023-12-25 07:38:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.557303370786517) internal successors, (693), 445 states have internal predecessors, (693), 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) [2023-12-25 07:38:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 693 transitions. [2023-12-25 07:38:00,369 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 693 transitions. Word has length 62 [2023-12-25 07:38:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 693 transitions. [2023-12-25 07:38:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-12-25 07:38:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 693 transitions. [2023-12-25 07:38:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 07:38:00,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:00,374 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] [2023-12-25 07:38:00,383 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 [2023-12-25 07:38:00,577 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 [2023-12-25 07:38:00,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:00,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1945006298, now seen corresponding path program 1 times [2023-12-25 07:38:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344525695] [2023-12-25 07:38:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:00,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:00,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:00,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 07:38:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:00,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:00,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:00,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:00,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344525695] [2023-12-25 07:38:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344525695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:00,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871558717] [2023-12-25 07:38:00,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:00,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:00,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:00,714 INFO L87 Difference]: Start difference. First operand 446 states and 693 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 07:38:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:00,731 INFO L93 Difference]: Finished difference Result 1210 states and 1911 transitions. [2023-12-25 07:38:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-12-25 07:38:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:00,734 INFO L225 Difference]: With dead ends: 1210 [2023-12-25 07:38:00,734 INFO L226 Difference]: Without dead ends: 800 [2023-12-25 07:38:00,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:00,735 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 62 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:00,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-25 07:38:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 798. [2023-12-25 07:38:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.5621079046424091) internal successors, (1245), 797 states have internal predecessors, (1245), 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) [2023-12-25 07:38:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1245 transitions. [2023-12-25 07:38:00,749 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1245 transitions. Word has length 63 [2023-12-25 07:38:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:00,749 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1245 transitions. [2023-12-25 07:38:00,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 07:38:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1245 transitions. [2023-12-25 07:38:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 07:38:00,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:00,750 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] [2023-12-25 07:38:00,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:00,952 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 [2023-12-25 07:38:00,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -157863225, now seen corresponding path program 1 times [2023-12-25 07:38:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:00,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507349920] [2023-12-25 07:38:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:00,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:00,955 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) [2023-12-25 07:38:01,003 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 [2023-12-25 07:38:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:01,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:01,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:01,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:01,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:01,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507349920] [2023-12-25 07:38:01,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507349920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:01,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:01,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208919918] [2023-12-25 07:38:01,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,082 INFO L87 Difference]: Start difference. First operand 798 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 07:38:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:01,105 INFO L93 Difference]: Finished difference Result 1556 states and 2450 transitions. [2023-12-25 07:38:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-12-25 07:38:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:01,109 INFO L225 Difference]: With dead ends: 1556 [2023-12-25 07:38:01,109 INFO L226 Difference]: Without dead ends: 1146 [2023-12-25 07:38:01,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,110 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:01,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 298 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-12-25 07:38:01,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2023-12-25 07:38:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.5599300087489063) internal successors, (1783), 1143 states have internal predecessors, (1783), 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) [2023-12-25 07:38:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1783 transitions. [2023-12-25 07:38:01,131 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1783 transitions. Word has length 63 [2023-12-25 07:38:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:01,131 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1783 transitions. [2023-12-25 07:38:01,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 07:38:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1783 transitions. [2023-12-25 07:38:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 07:38:01,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:01,132 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] [2023-12-25 07:38:01,150 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 (9)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:01,334 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 [2023-12-25 07:38:01,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:01,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash -199705825, now seen corresponding path program 1 times [2023-12-25 07:38:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498705603] [2023-12-25 07:38:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:01,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:01,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:01,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:01,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 07:38:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:01,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:01,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:01,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:01,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498705603] [2023-12-25 07:38:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498705603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777445086] [2023-12-25 07:38:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:01,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,430 INFO L87 Difference]: Start difference. First operand 1144 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-25 07:38:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:01,483 INFO L93 Difference]: Finished difference Result 3164 states and 4937 transitions. [2023-12-25 07:38:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-25 07:38:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:01,489 INFO L225 Difference]: With dead ends: 3164 [2023-12-25 07:38:01,489 INFO L226 Difference]: Without dead ends: 2058 [2023-12-25 07:38:01,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,490 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:01,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-12-25 07:38:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2023-12-25 07:38:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2055 states have (on average 1.5411192214111922) internal successors, (3167), 2055 states have internal predecessors, (3167), 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) [2023-12-25 07:38:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3167 transitions. [2023-12-25 07:38:01,527 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3167 transitions. Word has length 64 [2023-12-25 07:38:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:01,527 INFO L495 AbstractCegarLoop]: Abstraction has 2056 states and 3167 transitions. [2023-12-25 07:38:01,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-25 07:38:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3167 transitions. [2023-12-25 07:38:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 07:38:01,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:01,528 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] [2023-12-25 07:38:01,543 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 [2023-12-25 07:38:01,731 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 [2023-12-25 07:38:01,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:01,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -673434561, now seen corresponding path program 1 times [2023-12-25 07:38:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:01,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310000210] [2023-12-25 07:38:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:01,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:01,733 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) [2023-12-25 07:38:01,736 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 [2023-12-25 07:38:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:01,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:01,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:01,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:01,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310000210] [2023-12-25 07:38:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310000210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740185207] [2023-12-25 07:38:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:01,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,861 INFO L87 Difference]: Start difference. First operand 2056 states and 3167 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-25 07:38:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:01,945 INFO L93 Difference]: Finished difference Result 5708 states and 8753 transitions. [2023-12-25 07:38:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:01,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-25 07:38:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:01,955 INFO L225 Difference]: With dead ends: 5708 [2023-12-25 07:38:01,955 INFO L226 Difference]: Without dead ends: 3690 [2023-12-25 07:38:01,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:01,958 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:01,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2023-12-25 07:38:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2023-12-25 07:38:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 1.512069433143477) internal successors, (5575), 3687 states have internal predecessors, (5575), 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) [2023-12-25 07:38:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5575 transitions. [2023-12-25 07:38:02,035 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5575 transitions. Word has length 64 [2023-12-25 07:38:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:02,035 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5575 transitions. [2023-12-25 07:38:02,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-25 07:38:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5575 transitions. [2023-12-25 07:38:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-25 07:38:02,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:02,038 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:02,061 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 [2023-12-25 07:38:02,240 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 [2023-12-25 07:38:02,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:02,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1327109602, now seen corresponding path program 1 times [2023-12-25 07:38:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841895621] [2023-12-25 07:38:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:02,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:02,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:02,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 07:38:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:02,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:02,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:02,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:03,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841895621] [2023-12-25 07:38:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841895621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:03,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906054564] [2023-12-25 07:38:03,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:03,087 INFO L87 Difference]: Start difference. First operand 3688 states and 5575 transitions. Second operand has 16 states, 16 states have (on average 9.625) internal successors, (154), 15 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) [2023-12-25 07:38:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:03,749 INFO L93 Difference]: Finished difference Result 11982 states and 17898 transitions. [2023-12-25 07:38:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 07:38:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 15 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 89 [2023-12-25 07:38:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:03,772 INFO L225 Difference]: With dead ends: 11982 [2023-12-25 07:38:03,772 INFO L226 Difference]: Without dead ends: 9484 [2023-12-25 07:38:03,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-12-25 07:38:03,776 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1121 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:03,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 732 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:38:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2023-12-25 07:38:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 7704. [2023-12-25 07:38:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7703 states have (on average 1.5026613007918992) internal successors, (11575), 7703 states have internal predecessors, (11575), 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) [2023-12-25 07:38:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 11575 transitions. [2023-12-25 07:38:03,975 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 11575 transitions. Word has length 89 [2023-12-25 07:38:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:03,975 INFO L495 AbstractCegarLoop]: Abstraction has 7704 states and 11575 transitions. [2023-12-25 07:38:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 15 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) [2023-12-25 07:38:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 11575 transitions. [2023-12-25 07:38:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:38:03,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:03,978 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:03,992 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 (12)] Ended with exit code 0 [2023-12-25 07:38:04,180 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 [2023-12-25 07:38:04,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:04,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1303193561, now seen corresponding path program 1 times [2023-12-25 07:38:04,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:04,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153631674] [2023-12-25 07:38:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:04,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:04,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:04,183 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) [2023-12-25 07:38:04,185 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 [2023-12-25 07:38:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:04,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:04,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:04,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:04,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153631674] [2023-12-25 07:38:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153631674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873117883] [2023-12-25 07:38:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:04,323 INFO L87 Difference]: Start difference. First operand 7704 states and 11575 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:04,407 INFO L93 Difference]: Finished difference Result 12948 states and 19517 transitions. [2023-12-25 07:38:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:04,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2023-12-25 07:38:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:04,433 INFO L225 Difference]: With dead ends: 12948 [2023-12-25 07:38:04,434 INFO L226 Difference]: Without dead ends: 5282 [2023-12-25 07:38:04,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:04,442 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 67 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:04,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 293 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2023-12-25 07:38:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 5270. [2023-12-25 07:38:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 1.4968684759916493) internal successors, (7887), 5269 states have internal predecessors, (7887), 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) [2023-12-25 07:38:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 7887 transitions. [2023-12-25 07:38:04,574 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 7887 transitions. Word has length 90 [2023-12-25 07:38:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:04,574 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 7887 transitions. [2023-12-25 07:38:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 7887 transitions. [2023-12-25 07:38:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:38:04,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:04,576 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:04,581 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 (13)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:04,778 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 [2023-12-25 07:38:04,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:04,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 803773114, now seen corresponding path program 1 times [2023-12-25 07:38:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633200251] [2023-12-25 07:38:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:04,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:04,781 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:04,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 07:38:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:04,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:04,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:04,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:04,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633200251] [2023-12-25 07:38:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633200251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:04,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:04,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811248846] [2023-12-25 07:38:04,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:04,874 INFO L87 Difference]: Start difference. First operand 5270 states and 7887 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:05,024 INFO L93 Difference]: Finished difference Result 15510 states and 23157 transitions. [2023-12-25 07:38:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2023-12-25 07:38:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:05,036 INFO L225 Difference]: With dead ends: 15510 [2023-12-25 07:38:05,036 INFO L226 Difference]: Without dead ends: 10308 [2023-12-25 07:38:05,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:05,042 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:05,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 252 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2023-12-25 07:38:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 10306. [2023-12-25 07:38:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10306 states, 10305 states have (on average 1.4768558951965065) internal successors, (15219), 10305 states have internal predecessors, (15219), 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) [2023-12-25 07:38:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10306 states to 10306 states and 15219 transitions. [2023-12-25 07:38:05,233 INFO L78 Accepts]: Start accepts. Automaton has 10306 states and 15219 transitions. Word has length 90 [2023-12-25 07:38:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:05,233 INFO L495 AbstractCegarLoop]: Abstraction has 10306 states and 15219 transitions. [2023-12-25 07:38:05,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 10306 states and 15219 transitions. [2023-12-25 07:38:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:38:05,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:05,237 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:05,257 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 (14)] Ended with exit code 0 [2023-12-25 07:38:05,439 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 [2023-12-25 07:38:05,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:05,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash -503918168, now seen corresponding path program 1 times [2023-12-25 07:38:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492479128] [2023-12-25 07:38:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:05,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:05,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:05,442 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) [2023-12-25 07:38:05,457 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 [2023-12-25 07:38:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:05,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:38:05,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:06,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:06,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492479128] [2023-12-25 07:38:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492479128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:06,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:38:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843661703] [2023-12-25 07:38:06,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:06,305 INFO L87 Difference]: Start difference. First operand 10306 states and 15219 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 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) [2023-12-25 07:38:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:08,241 INFO L93 Difference]: Finished difference Result 37574 states and 55129 transitions. [2023-12-25 07:38:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 07:38:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 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 90 [2023-12-25 07:38:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:08,288 INFO L225 Difference]: With dead ends: 37574 [2023-12-25 07:38:08,288 INFO L226 Difference]: Without dead ends: 27356 [2023-12-25 07:38:08,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 07:38:08,305 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 830 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:08,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1954 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 07:38:08,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27356 states. [2023-12-25 07:38:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27356 to 23538. [2023-12-25 07:38:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23538 states, 23537 states have (on average 1.4656498279304924) internal successors, (34497), 23537 states have internal predecessors, (34497), 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) [2023-12-25 07:38:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23538 states to 23538 states and 34497 transitions. [2023-12-25 07:38:09,001 INFO L78 Accepts]: Start accepts. Automaton has 23538 states and 34497 transitions. Word has length 90 [2023-12-25 07:38:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:09,001 INFO L495 AbstractCegarLoop]: Abstraction has 23538 states and 34497 transitions. [2023-12-25 07:38:09,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 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) [2023-12-25 07:38:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23538 states and 34497 transitions. [2023-12-25 07:38:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:38:09,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:09,007 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:09,010 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:09,210 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 [2023-12-25 07:38:09,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:09,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1317448366, now seen corresponding path program 1 times [2023-12-25 07:38:09,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:09,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861576146] [2023-12-25 07:38:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:09,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:09,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:09,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 07:38:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:09,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:09,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:09,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:09,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861576146] [2023-12-25 07:38:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861576146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:09,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749117285] [2023-12-25 07:38:09,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:09,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:09,993 INFO L87 Difference]: Start difference. First operand 23538 states and 34497 transitions. Second operand has 16 states, 16 states have (on average 10.0) internal successors, (160), 15 states have internal predecessors, (160), 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) [2023-12-25 07:38:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:11,515 INFO L93 Difference]: Finished difference Result 91300 states and 133943 transitions. [2023-12-25 07:38:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:38:11,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 15 states have internal predecessors, (160), 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 90 [2023-12-25 07:38:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:11,762 INFO L225 Difference]: With dead ends: 91300 [2023-12-25 07:38:11,762 INFO L226 Difference]: Without dead ends: 67858 [2023-12-25 07:38:11,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:38:11,794 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1370 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:11,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 902 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:38:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67858 states. [2023-12-25 07:38:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67858 to 50326. [2023-12-25 07:38:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50326 states, 50325 states have (on average 1.4613015399900646) internal successors, (73540), 50325 states have internal predecessors, (73540), 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) [2023-12-25 07:38:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50326 states to 50326 states and 73540 transitions. [2023-12-25 07:38:13,385 INFO L78 Accepts]: Start accepts. Automaton has 50326 states and 73540 transitions. Word has length 90 [2023-12-25 07:38:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:13,386 INFO L495 AbstractCegarLoop]: Abstraction has 50326 states and 73540 transitions. [2023-12-25 07:38:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 15 states have internal predecessors, (160), 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) [2023-12-25 07:38:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 50326 states and 73540 transitions. [2023-12-25 07:38:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:38:13,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:13,391 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:13,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:13,594 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 [2023-12-25 07:38:13,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:13,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash -81523059, now seen corresponding path program 1 times [2023-12-25 07:38:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108924119] [2023-12-25 07:38:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:13,596 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) [2023-12-25 07:38:13,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 07:38:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:13,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:13,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:13,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:13,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108924119] [2023-12-25 07:38:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108924119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715806095] [2023-12-25 07:38:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:13,834 INFO L87 Difference]: Start difference. First operand 50326 states and 73540 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:14,236 INFO L93 Difference]: Finished difference Result 77090 states and 112598 transitions. [2023-12-25 07:38:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2023-12-25 07:38:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:14,272 INFO L225 Difference]: With dead ends: 77090 [2023-12-25 07:38:14,272 INFO L226 Difference]: Without dead ends: 26888 [2023-12-25 07:38:14,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:14,301 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 60 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:14,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 274 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26888 states. [2023-12-25 07:38:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26888 to 26886. [2023-12-25 07:38:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26886 states, 26885 states have (on average 1.4403570764366747) internal successors, (38724), 26885 states have internal predecessors, (38724), 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) [2023-12-25 07:38:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26886 states to 26886 states and 38724 transitions. [2023-12-25 07:38:15,097 INFO L78 Accepts]: Start accepts. Automaton has 26886 states and 38724 transitions. Word has length 90 [2023-12-25 07:38:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:15,097 INFO L495 AbstractCegarLoop]: Abstraction has 26886 states and 38724 transitions. [2023-12-25 07:38:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-12-25 07:38:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 26886 states and 38724 transitions. [2023-12-25 07:38:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 07:38:15,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:15,100 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:15,103 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 (17)] Ended with exit code 0 [2023-12-25 07:38:15,302 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 [2023-12-25 07:38:15,303 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:15,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash -560536660, now seen corresponding path program 1 times [2023-12-25 07:38:15,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142962419] [2023-12-25 07:38:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:15,305 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:15,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 07:38:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:15,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:15,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:15,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:15,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142962419] [2023-12-25 07:38:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142962419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036977972] [2023-12-25 07:38:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:15,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:15,419 INFO L87 Difference]: Start difference. First operand 26886 states and 38724 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-25 07:38:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:16,464 INFO L93 Difference]: Finished difference Result 79567 states and 114138 transitions. [2023-12-25 07:38:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:16,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2023-12-25 07:38:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:16,536 INFO L225 Difference]: With dead ends: 79567 [2023-12-25 07:38:16,537 INFO L226 Difference]: Without dead ends: 52805 [2023-12-25 07:38:16,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:16,589 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 65 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:16,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 259 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52805 states. [2023-12-25 07:38:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52805 to 52803. [2023-12-25 07:38:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52803 states, 52802 states have (on average 1.419037157683421) internal successors, (74928), 52802 states have internal predecessors, (74928), 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) [2023-12-25 07:38:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52803 states to 52803 states and 74928 transitions. [2023-12-25 07:38:18,235 INFO L78 Accepts]: Start accepts. Automaton has 52803 states and 74928 transitions. Word has length 91 [2023-12-25 07:38:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:18,236 INFO L495 AbstractCegarLoop]: Abstraction has 52803 states and 74928 transitions. [2023-12-25 07:38:18,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-25 07:38:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 52803 states and 74928 transitions. [2023-12-25 07:38:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 07:38:18,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:18,267 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:18,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:18,470 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 [2023-12-25 07:38:18,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:18,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2035831462, now seen corresponding path program 1 times [2023-12-25 07:38:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:18,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172347508] [2023-12-25 07:38:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:18,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:18,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:18,473 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) [2023-12-25 07:38:18,498 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 [2023-12-25 07:38:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:18,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:38:18,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:19,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:19,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:19,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172347508] [2023-12-25 07:38:19,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172347508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:19,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:38:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39484943] [2023-12-25 07:38:19,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:19,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:19,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:19,475 INFO L87 Difference]: Start difference. First operand 52803 states and 74928 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 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) [2023-12-25 07:38:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:22,232 INFO L93 Difference]: Finished difference Result 143733 states and 203525 transitions. [2023-12-25 07:38:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 07:38:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 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 91 [2023-12-25 07:38:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:22,339 INFO L225 Difference]: With dead ends: 143733 [2023-12-25 07:38:22,339 INFO L226 Difference]: Without dead ends: 91072 [2023-12-25 07:38:22,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:38:22,362 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1165 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:22,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1834 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 07:38:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91072 states. [2023-12-25 07:38:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91072 to 71408. [2023-12-25 07:38:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71408 states, 71407 states have (on average 1.4192446118727855) internal successors, (101344), 71407 states have internal predecessors, (101344), 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) [2023-12-25 07:38:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71408 states to 71408 states and 101344 transitions. [2023-12-25 07:38:24,528 INFO L78 Accepts]: Start accepts. Automaton has 71408 states and 101344 transitions. Word has length 91 [2023-12-25 07:38:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:24,528 INFO L495 AbstractCegarLoop]: Abstraction has 71408 states and 101344 transitions. [2023-12-25 07:38:24,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 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) [2023-12-25 07:38:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 71408 states and 101344 transitions. [2023-12-25 07:38:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 07:38:24,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:24,534 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:24,545 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 [2023-12-25 07:38:24,736 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 [2023-12-25 07:38:24,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:24,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1887965422, now seen corresponding path program 1 times [2023-12-25 07:38:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621102105] [2023-12-25 07:38:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:24,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:24,739 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:24,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 07:38:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:24,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:24,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:25,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:25,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621102105] [2023-12-25 07:38:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621102105] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:25,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:25,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268191101] [2023-12-25 07:38:25,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:25,858 INFO L87 Difference]: Start difference. First operand 71408 states and 101344 transitions. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 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) [2023-12-25 07:38:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:29,465 INFO L93 Difference]: Finished difference Result 274176 states and 390525 transitions. [2023-12-25 07:38:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:38:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 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 91 [2023-12-25 07:38:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:29,747 INFO L225 Difference]: With dead ends: 274176 [2023-12-25 07:38:29,748 INFO L226 Difference]: Without dead ends: 202910 [2023-12-25 07:38:29,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:38:29,801 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 984 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:29,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 786 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:38:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202910 states. [2023-12-25 07:38:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202910 to 155998. [2023-12-25 07:38:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155998 states, 155997 states have (on average 1.4171554581177843) internal successors, (221072), 155997 states have internal predecessors, (221072), 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) [2023-12-25 07:38:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155998 states to 155998 states and 221072 transitions. [2023-12-25 07:38:34,475 INFO L78 Accepts]: Start accepts. Automaton has 155998 states and 221072 transitions. Word has length 91 [2023-12-25 07:38:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:34,476 INFO L495 AbstractCegarLoop]: Abstraction has 155998 states and 221072 transitions. [2023-12-25 07:38:34,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 15 states have internal predecessors, (166), 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) [2023-12-25 07:38:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 155998 states and 221072 transitions. [2023-12-25 07:38:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 07:38:34,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:34,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:34,486 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 [2023-12-25 07:38:34,685 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 [2023-12-25 07:38:34,686 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:34,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -235389875, now seen corresponding path program 1 times [2023-12-25 07:38:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835845214] [2023-12-25 07:38:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:34,688 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) [2023-12-25 07:38:34,689 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 [2023-12-25 07:38:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:34,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:34,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:34,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:34,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835845214] [2023-12-25 07:38:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835845214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:34,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:34,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:34,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769543198] [2023-12-25 07:38:34,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:34,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:34,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:34,783 INFO L87 Difference]: Start difference. First operand 155998 states and 221072 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-25 07:38:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:36,823 INFO L93 Difference]: Finished difference Result 239922 states and 339880 transitions. [2023-12-25 07:38:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2023-12-25 07:38:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:36,956 INFO L225 Difference]: With dead ends: 239922 [2023-12-25 07:38:36,956 INFO L226 Difference]: Without dead ends: 84112 [2023-12-25 07:38:37,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:37,044 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 54 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:37,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84112 states. [2023-12-25 07:38:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84112 to 84110. [2023-12-25 07:38:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84110 states, 84109 states have (on average 1.3979716796062251) internal successors, (117582), 84109 states have internal predecessors, (117582), 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) [2023-12-25 07:38:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84110 states to 84110 states and 117582 transitions. [2023-12-25 07:38:39,615 INFO L78 Accepts]: Start accepts. Automaton has 84110 states and 117582 transitions. Word has length 91 [2023-12-25 07:38:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:39,615 INFO L495 AbstractCegarLoop]: Abstraction has 84110 states and 117582 transitions. [2023-12-25 07:38:39,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-25 07:38:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 84110 states and 117582 transitions. [2023-12-25 07:38:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 07:38:39,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:39,620 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:39,626 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 (21)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:39,825 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 [2023-12-25 07:38:39,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:39,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2105818200, now seen corresponding path program 1 times [2023-12-25 07:38:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:39,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652059163] [2023-12-25 07:38:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:39,828 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:39,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 07:38:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:39,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:39,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:39,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:39,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652059163] [2023-12-25 07:38:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652059163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:39,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:39,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:39,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219618133] [2023-12-25 07:38:39,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:39,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:39,918 INFO L87 Difference]: Start difference. First operand 84110 states and 117582 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-12-25 07:38:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:40,862 INFO L93 Difference]: Finished difference Result 125948 states and 175948 transitions. [2023-12-25 07:38:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2023-12-25 07:38:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:40,918 INFO L225 Difference]: With dead ends: 125948 [2023-12-25 07:38:40,918 INFO L226 Difference]: Without dead ends: 42026 [2023-12-25 07:38:40,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:40,952 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 47 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:40,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 236 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42026 states. [2023-12-25 07:38:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42026 to 42024. [2023-12-25 07:38:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42024 states, 42023 states have (on average 1.384337148704281) internal successors, (58174), 42023 states have internal predecessors, (58174), 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) [2023-12-25 07:38:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42024 states to 42024 states and 58174 transitions. [2023-12-25 07:38:42,143 INFO L78 Accepts]: Start accepts. Automaton has 42024 states and 58174 transitions. Word has length 92 [2023-12-25 07:38:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:42,151 INFO L495 AbstractCegarLoop]: Abstraction has 42024 states and 58174 transitions. [2023-12-25 07:38:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-12-25 07:38:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 42024 states and 58174 transitions. [2023-12-25 07:38:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 07:38:42,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:42,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:42,166 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 (22)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:42,366 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:42,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1682863751, now seen corresponding path program 1 times [2023-12-25 07:38:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:42,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725568547] [2023-12-25 07:38:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:42,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:42,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:42,368 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:42,370 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 (23)] Waiting until timeout for monitored process [2023-12-25 07:38:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:42,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:42,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:42,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:43,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725568547] [2023-12-25 07:38:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725568547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:43,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472277396] [2023-12-25 07:38:43,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:43,179 INFO L87 Difference]: Start difference. First operand 42024 states and 58174 transitions. Second operand has 16 states, 16 states have (on average 10.75) internal successors, (172), 15 states have internal predecessors, (172), 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) [2023-12-25 07:38:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:45,593 INFO L93 Difference]: Finished difference Result 175368 states and 242949 transitions. [2023-12-25 07:38:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 07:38:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 15 states have internal predecessors, (172), 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 92 [2023-12-25 07:38:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:45,758 INFO L225 Difference]: With dead ends: 175368 [2023-12-25 07:38:45,758 INFO L226 Difference]: Without dead ends: 133532 [2023-12-25 07:38:45,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-25 07:38:45,781 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1721 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:45,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 455 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 07:38:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133532 states. [2023-12-25 07:38:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133532 to 113288. [2023-12-25 07:38:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113288 states, 113287 states have (on average 1.373997016427304) internal successors, (155656), 113287 states have internal predecessors, (155656), 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) [2023-12-25 07:38:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113288 states to 113288 states and 155656 transitions. [2023-12-25 07:38:49,053 INFO L78 Accepts]: Start accepts. Automaton has 113288 states and 155656 transitions. Word has length 92 [2023-12-25 07:38:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:49,053 INFO L495 AbstractCegarLoop]: Abstraction has 113288 states and 155656 transitions. [2023-12-25 07:38:49,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 15 states have internal predecessors, (172), 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) [2023-12-25 07:38:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 113288 states and 155656 transitions. [2023-12-25 07:38:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 07:38:49,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:49,059 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:38:49,078 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 (23)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:49,262 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:49,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash 348073293, now seen corresponding path program 1 times [2023-12-25 07:38:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:49,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251513652] [2023-12-25 07:38:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:49,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:49,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:49,264 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:49,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 07:38:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:49,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:38:49,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:49,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:50,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251513652] [2023-12-25 07:38:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251513652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:50,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:50,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:38:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462691584] [2023-12-25 07:38:50,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:50,388 INFO L87 Difference]: Start difference. First operand 113288 states and 155656 transitions. Second operand has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 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) [2023-12-25 07:38:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:57,646 INFO L93 Difference]: Finished difference Result 458562 states and 630072 transitions. [2023-12-25 07:38:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 07:38:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 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 93 [2023-12-25 07:38:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:58,285 INFO L225 Difference]: With dead ends: 458562 [2023-12-25 07:38:58,285 INFO L226 Difference]: Without dead ends: 345462 [2023-12-25 07:38:58,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:38:58,369 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1698 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:58,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 1451 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 07:38:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345462 states. [2023-12-25 07:39:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345462 to 278048. [2023-12-25 07:39:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278048 states, 278047 states have (on average 1.367106999895701) internal successors, (380120), 278047 states have internal predecessors, (380120), 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) [2023-12-25 07:39:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278048 states to 278048 states and 380120 transitions. [2023-12-25 07:39:07,697 INFO L78 Accepts]: Start accepts. Automaton has 278048 states and 380120 transitions. Word has length 93 [2023-12-25 07:39:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:39:07,697 INFO L495 AbstractCegarLoop]: Abstraction has 278048 states and 380120 transitions. [2023-12-25 07:39:07,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 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) [2023-12-25 07:39:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 278048 states and 380120 transitions. [2023-12-25 07:39:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 07:39:07,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:39:07,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:39:07,708 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 (24)] Ended with exit code 0 [2023-12-25 07:39:07,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:39:07,908 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:39:07,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:39:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash 458246623, now seen corresponding path program 1 times [2023-12-25 07:39:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:39:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421700461] [2023-12-25 07:39:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:39:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:39:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:39:07,910 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:39:07,911 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 (25)] Waiting until timeout for monitored process [2023-12-25 07:39:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:39:07,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:39:07,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:39:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:39:08,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:39:08,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:39:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421700461] [2023-12-25 07:39:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421700461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:39:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:39:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:39:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242884814] [2023-12-25 07:39:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:39:08,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:39:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:39:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:39:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:39:08,011 INFO L87 Difference]: Start difference. First operand 278048 states and 380120 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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)