/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/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:44:46,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:44:46,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:44:46,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:44:46,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:44:46,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:44:46,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:44:46,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:44:46,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:44:46,095 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:44:46,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:44:46,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:44:46,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:44:46,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:44:46,097 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:44:46,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:44:46,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:44:46,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:44:46,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:44:46,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:44:46,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:44:46,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:44:46,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:44:46,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:44:46,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:44:46,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:44:46,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:44:46,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:44:46,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:44:46,103 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:44:46,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:44:46,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:44:46,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:44:46,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:44:46,320 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:44:46,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2023-12-24 22:44:47,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:44:47,496 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:44:47,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2023-12-24 22:44:47,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1a75020/e675a5c31f494ebb95bdea9ab8c30f79/FLAG33f349f89 [2023-12-24 22:44:47,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1a75020/e675a5c31f494ebb95bdea9ab8c30f79 [2023-12-24 22:44:47,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:44:47,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:44:47,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:44:47,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:44:47,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:44:47,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1763e776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47, skipping insertion in model container [2023-12-24 22:44:47,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:44:47,664 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2023-12-24 22:44:47,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:44:47,682 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:44:47,690 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2023-12-24 22:44:47,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:44:47,703 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:44:47,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47 WrapperNode [2023-12-24 22:44:47,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:44:47,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:44:47,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:44:47,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:44:47,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,728 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-12-24 22:44:47,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:44:47,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:44:47,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:44:47,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:44:47,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,753 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 22:44:47,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:44:47,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:44:47,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:44:47,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:44:47,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (1/1) ... [2023-12-24 22:44:47,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:44:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:44:47,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 22:44:47,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 22:44:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:44:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:44:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:44:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:44:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-24 22:44:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-24 22:44:47,865 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:44:47,866 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:44:48,056 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:44:48,082 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:44:48,083 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 22:44:48,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:44:48 BoogieIcfgContainer [2023-12-24 22:44:48,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:44:48,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:44:48,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:44:48,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:44:48,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:44:47" (1/3) ... [2023-12-24 22:44:48,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fb6484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:44:48, skipping insertion in model container [2023-12-24 22:44:48,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:44:47" (2/3) ... [2023-12-24 22:44:48,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fb6484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:44:48, skipping insertion in model container [2023-12-24 22:44:48,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:44:48" (3/3) ... [2023-12-24 22:44:48,093 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2023-12-24 22:44:48,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:44:48,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:44:48,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:44:48,134 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;@603f9e00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:44:48,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:44:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-24 22:44:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:44:48,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:48,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:48,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:48,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1062398335, now seen corresponding path program 1 times [2023-12-24 22:44:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419179612] [2023-12-24 22:44:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:48,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:48,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:48,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 22:44:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:48,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:44:48,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:48,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:48,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419179612] [2023-12-24 22:44:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419179612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:48,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:44:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465868218] [2023-12-24 22:44:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:44:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:44:48,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:44:48,244 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:44:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:48,264 INFO L93 Difference]: Finished difference Result 48 states and 79 transitions. [2023-12-24 22:44:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:44:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 22:44:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:48,270 INFO L225 Difference]: With dead ends: 48 [2023-12-24 22:44:48,270 INFO L226 Difference]: Without dead ends: 23 [2023-12-24 22:44:48,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:44:48,274 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2023-12-24 22:44:48,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:44:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-24 22:44:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-24 22:44:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-24 22:44:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-24 22:44:48,297 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 9 [2023-12-24 22:44:48,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:48,298 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-24 22:44:48,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:44:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-24 22:44:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:44:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:48,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:48,301 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 (2)] Forceful destruction successful, exit code 0 [2023-12-24 22:44:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:48,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:48,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2013109713, now seen corresponding path program 1 times [2023-12-24 22:44:48,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472783439] [2023-12-24 22:44:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:48,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:48,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:48,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:48,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 22:44:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:48,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:44:48,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:48,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:48,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472783439] [2023-12-24 22:44:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472783439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 22:44:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889265679] [2023-12-24 22:44:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 22:44:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 22:44:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:44:48,589 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:44:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:48,658 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2023-12-24 22:44:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 22:44:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-24 22:44:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:48,661 INFO L225 Difference]: With dead ends: 38 [2023-12-24 22:44:48,661 INFO L226 Difference]: Without dead ends: 36 [2023-12-24 22:44:48,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:44:48,664 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:48,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 78 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:44:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-24 22:44:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-12-24 22:44:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 22:44:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-24 22:44:48,678 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 10 [2023-12-24 22:44:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:48,678 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-24 22:44:48,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:44:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-24 22:44:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 22:44:48,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:48,679 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:48,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 22:44:48,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:48,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:48,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash -908723572, now seen corresponding path program 1 times [2023-12-24 22:44:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:48,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793586451] [2023-12-24 22:44:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:48,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:48,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:48,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 22:44:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:48,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:44:48,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:49,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:49,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793586451] [2023-12-24 22:44:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793586451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:49,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:49,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 22:44:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711525836] [2023-12-24 22:44:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:44:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:44:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:44:49,060 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 22:44:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:49,148 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-24 22:44:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:44:49,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-24 22:44:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:49,150 INFO L225 Difference]: With dead ends: 42 [2023-12-24 22:44:49,150 INFO L226 Difference]: Without dead ends: 40 [2023-12-24 22:44:49,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:44:49,153 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:49,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-24 22:44:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-12-24 22:44:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 22:44:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-12-24 22:44:49,169 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 15 [2023-12-24 22:44:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:49,169 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-12-24 22:44:49,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 22:44:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-12-24 22:44:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 22:44:49,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:49,170 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:49,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 22:44:49,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:49,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:49,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1256468744, now seen corresponding path program 1 times [2023-12-24 22:44:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078904112] [2023-12-24 22:44:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:49,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:49,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:49,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:49,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 22:44:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:49,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:44:49,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 22:44:49,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:49,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078904112] [2023-12-24 22:44:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078904112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 22:44:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104641986] [2023-12-24 22:44:49,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:44:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:44:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:44:49,443 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 22:44:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:49,537 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2023-12-24 22:44:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:44:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-24 22:44:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:49,539 INFO L225 Difference]: With dead ends: 59 [2023-12-24 22:44:49,539 INFO L226 Difference]: Without dead ends: 57 [2023-12-24 22:44:49,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:44:49,544 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:49,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-24 22:44:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-12-24 22:44:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 22:44:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2023-12-24 22:44:49,562 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 21 [2023-12-24 22:44:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:49,563 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2023-12-24 22:44:49,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 22:44:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2023-12-24 22:44:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:44:49,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:49,564 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:49,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:44:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:49,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:49,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2036104194, now seen corresponding path program 1 times [2023-12-24 22:44:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:49,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094265624] [2023-12-24 22:44:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:49,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:49,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:49,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 22:44:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:49,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:44:49,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 22:44:49,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:49,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094265624] [2023-12-24 22:44:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094265624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:49,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:49,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 22:44:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864369688] [2023-12-24 22:44:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:44:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:44:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:44:49,819 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 22:44:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:49,894 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2023-12-24 22:44:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:44:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-24 22:44:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:49,895 INFO L225 Difference]: With dead ends: 65 [2023-12-24 22:44:49,895 INFO L226 Difference]: Without dead ends: 63 [2023-12-24 22:44:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:44:49,896 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 173 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-24 22:44:49,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2023-12-24 22:44:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 37 states have internal predecessors, (40), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 22:44:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2023-12-24 22:44:49,902 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 22 [2023-12-24 22:44:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:49,903 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2023-12-24 22:44:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 22:44:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2023-12-24 22:44:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:44:49,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:49,903 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:49,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 22:44:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:50,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2030546205, now seen corresponding path program 1 times [2023-12-24 22:44:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400277118] [2023-12-24 22:44:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:50,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:50,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 22:44:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:50,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:44:50,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 22:44:50,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:50,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400277118] [2023-12-24 22:44:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400277118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 22:44:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641713947] [2023-12-24 22:44:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 22:44:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 22:44:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:44:50,204 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-24 22:44:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:50,299 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-12-24 22:44:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 22:44:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-24 22:44:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:50,302 INFO L225 Difference]: With dead ends: 67 [2023-12-24 22:44:50,302 INFO L226 Difference]: Without dead ends: 60 [2023-12-24 22:44:50,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:44:50,303 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:50,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 101 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-24 22:44:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-12-24 22:44:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 22:44:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-12-24 22:44:50,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 26 [2023-12-24 22:44:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:50,309 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-12-24 22:44:50,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-24 22:44:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-12-24 22:44:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:44:50,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:50,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:50,314 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 [2023-12-24 22:44:50,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:50,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:50,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1313350375, now seen corresponding path program 1 times [2023-12-24 22:44:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:50,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397457468] [2023-12-24 22:44:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:50,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:50,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:50,514 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:44:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:50,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:44:50,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:50,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 22:44:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 22:44:50,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:44:50,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397457468] [2023-12-24 22:44:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397457468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:44:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:44:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 22:44:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590999952] [2023-12-24 22:44:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:44:50,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 22:44:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 22:44:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:44:50,764 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-24 22:44:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:50,973 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2023-12-24 22:44:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 22:44:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-24 22:44:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:50,974 INFO L225 Difference]: With dead ends: 68 [2023-12-24 22:44:50,974 INFO L226 Difference]: Without dead ends: 66 [2023-12-24 22:44:50,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:44:50,975 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:50,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 158 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-24 22:44:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-12-24 22:44:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 22:44:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-12-24 22:44:50,982 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 27 [2023-12-24 22:44:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-12-24 22:44:50,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-24 22:44:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-12-24 22:44:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-24 22:44:50,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:50,984 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2023-12-24 22:44:50,986 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 [2023-12-24 22:44:51,185 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 [2023-12-24 22:44:51,186 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:51,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1758328766, now seen corresponding path program 1 times [2023-12-24 22:44:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:51,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767883039] [2023-12-24 22:44:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:51,188 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) [2023-12-24 22:44:51,196 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 [2023-12-24 22:44:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:51,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:44:51,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 22:44:51,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 22:44:51,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767883039] [2023-12-24 22:44:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767883039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:51,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 22:44:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310332367] [2023-12-24 22:44:51,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:51,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:44:51,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:44:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:44:51,379 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 22:44:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:51,596 INFO L93 Difference]: Finished difference Result 122 states and 169 transitions. [2023-12-24 22:44:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 22:44:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 45 [2023-12-24 22:44:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:51,598 INFO L225 Difference]: With dead ends: 122 [2023-12-24 22:44:51,598 INFO L226 Difference]: Without dead ends: 120 [2023-12-24 22:44:51,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:44:51,599 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:51,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 216 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:44:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-24 22:44:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2023-12-24 22:44:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 63 states have internal predecessors, (71), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 22:44:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2023-12-24 22:44:51,620 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 45 [2023-12-24 22:44:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2023-12-24 22:44:51,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 22:44:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2023-12-24 22:44:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-24 22:44:51,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:51,622 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:51,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 22:44:51,824 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 [2023-12-24 22:44:51,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:51,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash -636654600, now seen corresponding path program 1 times [2023-12-24 22:44:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831793248] [2023-12-24 22:44:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:51,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:51,826 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) [2023-12-24 22:44:51,828 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 [2023-12-24 22:44:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:51,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:44:51,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 22:44:51,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 22:44:51,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831793248] [2023-12-24 22:44:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831793248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:51,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 22:44:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241157163] [2023-12-24 22:44:51,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:44:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:44:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:44:51,995 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 22:44:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:52,174 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2023-12-24 22:44:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 22:44:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 46 [2023-12-24 22:44:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:52,176 INFO L225 Difference]: With dead ends: 128 [2023-12-24 22:44:52,176 INFO L226 Difference]: Without dead ends: 126 [2023-12-24 22:44:52,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:44:52,177 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 54 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:52,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 324 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:44:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-24 22:44:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2023-12-24 22:44:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 66 states have internal predecessors, (74), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 22:44:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2023-12-24 22:44:52,196 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 46 [2023-12-24 22:44:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:52,196 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2023-12-24 22:44:52,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 22:44:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2023-12-24 22:44:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-24 22:44:52,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:52,200 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2023-12-24 22:44:52,202 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 [2023-12-24 22:44:52,402 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 [2023-12-24 22:44:52,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:52,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:52,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1160009689, now seen corresponding path program 1 times [2023-12-24 22:44:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:52,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140741807] [2023-12-24 22:44:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:44:52,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:52,405 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) [2023-12-24 22:44:52,406 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 [2023-12-24 22:44:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:52,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 22:44:52,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 22:44:52,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 22:44:52,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140741807] [2023-12-24 22:44:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140741807] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:52,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 22:44:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24926444] [2023-12-24 22:44:52,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 22:44:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 22:44:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:44:52,789 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-24 22:44:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:53,156 INFO L93 Difference]: Finished difference Result 140 states and 190 transitions. [2023-12-24 22:44:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:44:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 50 [2023-12-24 22:44:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:53,158 INFO L225 Difference]: With dead ends: 140 [2023-12-24 22:44:53,158 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 22:44:53,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:44:53,159 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:53,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 295 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:44:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 22:44:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2023-12-24 22:44:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 72 states have internal predecessors, (76), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 22:44:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2023-12-24 22:44:53,180 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 50 [2023-12-24 22:44:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:53,180 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2023-12-24 22:44:53,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-24 22:44:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2023-12-24 22:44:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-24 22:44:53,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:53,181 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:53,189 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 [2023-12-24 22:44:53,383 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 [2023-12-24 22:44:53,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:53,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1190365469, now seen corresponding path program 2 times [2023-12-24 22:44:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302274805] [2023-12-24 22:44:53,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:44:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:53,391 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) [2023-12-24 22:44:53,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:44:53,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:44:53,423 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 [2023-12-24 22:44:53,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 22:44:53,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 22:44:53,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 22:44:54,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302274805] [2023-12-24 22:44:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302274805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:54,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-24 22:44:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303574863] [2023-12-24 22:44:54,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 22:44:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 22:44:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-24 22:44:54,112 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-24 22:44:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:54,818 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2023-12-24 22:44:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 22:44:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 51 [2023-12-24 22:44:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:54,820 INFO L225 Difference]: With dead ends: 138 [2023-12-24 22:44:54,820 INFO L226 Difference]: Without dead ends: 136 [2023-12-24 22:44:54,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:44:54,821 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:54,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 357 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:44:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-24 22:44:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2023-12-24 22:44:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 78 states have internal predecessors, (82), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 22:44:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2023-12-24 22:44:54,834 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 51 [2023-12-24 22:44:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2023-12-24 22:44:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-24 22:44:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2023-12-24 22:44:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-24 22:44:54,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:54,835 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:54,854 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 [2023-12-24 22:44:55,038 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 [2023-12-24 22:44:55,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:55,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -239313979, now seen corresponding path program 2 times [2023-12-24 22:44:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443546654] [2023-12-24 22:44:55,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:44:55,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:55,040 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) [2023-12-24 22:44:55,058 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 [2023-12-24 22:44:55,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:44:55,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:44:55,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:44:55,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 91 proven. 47 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-24 22:44:55,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 91 proven. 47 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-24 22:44:56,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:56,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443546654] [2023-12-24 22:44:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443546654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:56,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:56,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2023-12-24 22:44:56,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130249183] [2023-12-24 22:44:56,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:56,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 22:44:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 22:44:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-12-24 22:44:56,275 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-24 22:44:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:57,438 INFO L93 Difference]: Finished difference Result 168 states and 220 transitions. [2023-12-24 22:44:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:44:57,439 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) Word has length 98 [2023-12-24 22:44:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:57,440 INFO L225 Difference]: With dead ends: 168 [2023-12-24 22:44:57,440 INFO L226 Difference]: Without dead ends: 155 [2023-12-24 22:44:57,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=1469, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 22:44:57,441 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 131 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:57,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 485 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:44:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-24 22:44:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2023-12-24 22:44:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 87 states have (on average 1.103448275862069) internal successors, (96), 92 states have internal predecessors, (96), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 22:44:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2023-12-24 22:44:57,452 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 98 [2023-12-24 22:44:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:57,459 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2023-12-24 22:44:57,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-24 22:44:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2023-12-24 22:44:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 22:44:57,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:57,460 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-12-24 22:44:57,471 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 [2023-12-24 22:44:57,669 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 [2023-12-24 22:44:57,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:57,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1623404479, now seen corresponding path program 3 times [2023-12-24 22:44:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650424065] [2023-12-24 22:44:57,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:44:57,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:44:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:57,672 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) [2023-12-24 22:44:57,678 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 [2023-12-24 22:44:57,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-24 22:44:57,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:44:57,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 22:44:57,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 231 proven. 97 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-24 22:44:58,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 205 proven. 93 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-24 22:44:59,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650424065] [2023-12-24 22:44:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650424065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:59,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2023-12-24 22:44:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393263432] [2023-12-24 22:44:59,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:59,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 22:44:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 22:44:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:44:59,744 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 22:45:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:05,751 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2023-12-24 22:45:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 22:45:05,752 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) Word has length 123 [2023-12-24 22:45:05,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:05,753 INFO L225 Difference]: With dead ends: 182 [2023-12-24 22:45:05,753 INFO L226 Difference]: Without dead ends: 180 [2023-12-24 22:45:05,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=850, Invalid=2572, Unknown=0, NotChecked=0, Total=3422 [2023-12-24 22:45:05,754 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 182 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:05,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 519 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 22:45:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-24 22:45:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2023-12-24 22:45:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 104 states have internal predecessors, (112), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 22:45:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-24 22:45:05,770 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 123 [2023-12-24 22:45:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:05,771 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-24 22:45:05,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 22:45:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-24 22:45:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 22:45:05,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:05,772 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:05,777 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 [2023-12-24 22:45:05,974 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 [2023-12-24 22:45:05,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:05,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1994423958, now seen corresponding path program 2 times [2023-12-24 22:45:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:05,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155320718] [2023-12-24 22:45:05,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:45:05,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:05,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:05,978 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) [2023-12-24 22:45:06,008 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 [2023-12-24 22:45:06,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:45:06,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:06,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 22:45:06,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 44 proven. 90 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 22:45:06,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 44 proven. 90 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 22:45:06,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:45:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155320718] [2023-12-24 22:45:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155320718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:45:06,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:45:06,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 22:45:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110649152] [2023-12-24 22:45:06,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:45:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 22:45:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:45:06,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 22:45:06,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:45:06,407 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-24 22:45:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:07,024 INFO L93 Difference]: Finished difference Result 240 states and 328 transitions. [2023-12-24 22:45:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 22:45:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 141 [2023-12-24 22:45:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:07,026 INFO L225 Difference]: With dead ends: 240 [2023-12-24 22:45:07,026 INFO L226 Difference]: Without dead ends: 230 [2023-12-24 22:45:07,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2023-12-24 22:45:07,027 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 116 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 610 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:45:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-24 22:45:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 202. [2023-12-24 22:45:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 122 states have internal predecessors, (134), 67 states have call successors, (67), 17 states have call predecessors, (67), 17 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-24 22:45:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 267 transitions. [2023-12-24 22:45:07,046 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 267 transitions. Word has length 141 [2023-12-24 22:45:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:07,046 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 267 transitions. [2023-12-24 22:45:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-24 22:45:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 267 transitions. [2023-12-24 22:45:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 22:45:07,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:07,047 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:07,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-24 22:45:07,250 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 [2023-12-24 22:45:07,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:07,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 634329040, now seen corresponding path program 4 times [2023-12-24 22:45:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598746841] [2023-12-24 22:45:07,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:45:07,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:07,259 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) [2023-12-24 22:45:07,260 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 [2023-12-24 22:45:07,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:45:07,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:07,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 22:45:07,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 44 proven. 115 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 22:45:07,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 44 proven. 115 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 22:45:07,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:45:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598746841] [2023-12-24 22:45:07,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598746841] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:45:07,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:45:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 22:45:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506368344] [2023-12-24 22:45:07,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:45:07,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 22:45:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:45:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 22:45:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:45:07,666 INFO L87 Difference]: Start difference. First operand 202 states and 267 transitions. Second operand has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-24 22:45:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:08,156 INFO L93 Difference]: Finished difference Result 238 states and 318 transitions. [2023-12-24 22:45:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 22:45:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 142 [2023-12-24 22:45:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:08,158 INFO L225 Difference]: With dead ends: 238 [2023-12-24 22:45:08,158 INFO L226 Difference]: Without dead ends: 236 [2023-12-24 22:45:08,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2023-12-24 22:45:08,159 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 117 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:08,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 719 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:45:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-24 22:45:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 206. [2023-12-24 22:45:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 125 states have internal predecessors, (137), 67 states have call successors, (67), 18 states have call predecessors, (67), 18 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-24 22:45:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 270 transitions. [2023-12-24 22:45:08,177 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 270 transitions. Word has length 142 [2023-12-24 22:45:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:08,177 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 270 transitions. [2023-12-24 22:45:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-24 22:45:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 270 transitions. [2023-12-24 22:45:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-24 22:45:08,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:08,178 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:08,181 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 (16)] Ended with exit code 0 [2023-12-24 22:45:08,382 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 [2023-12-24 22:45:08,382 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:08,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash -317437027, now seen corresponding path program 3 times [2023-12-24 22:45:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:08,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750185180] [2023-12-24 22:45:08,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:45:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:08,384 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) [2023-12-24 22:45:08,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 22:45:08,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:45:08,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:08,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:45:08,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2104 backedges. 311 proven. 47 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-24 22:45:08,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:09,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:45:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750185180] [2023-12-24 22:45:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750185180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 22:45:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1950222769] [2023-12-24 22:45:09,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:45:09,390 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 22:45:09,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 22:45:09,433 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 22:45:09,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 22:45:09,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:45:09,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:09,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 22:45:09,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2104 backedges. 293 proven. 65 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-24 22:45:10,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1950222769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 22:45:10,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:45:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2023-12-24 22:45:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322159619] [2023-12-24 22:45:10,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:45:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 22:45:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:45:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 22:45:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2023-12-24 22:45:10,525 INFO L87 Difference]: Start difference. First operand 206 states and 270 transitions. Second operand has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-24 22:45:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:11,557 INFO L93 Difference]: Finished difference Result 212 states and 275 transitions. [2023-12-24 22:45:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 22:45:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) Word has length 194 [2023-12-24 22:45:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:11,560 INFO L225 Difference]: With dead ends: 212 [2023-12-24 22:45:11,561 INFO L226 Difference]: Without dead ends: 198 [2023-12-24 22:45:11,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=303, Invalid=1257, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:45:11,562 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:11,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 128 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 22:45:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-24 22:45:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-24 22:45:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 122 states have internal predecessors, (122), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-24 22:45:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 236 transitions. [2023-12-24 22:45:11,608 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 236 transitions. Word has length 194 [2023-12-24 22:45:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:11,608 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 236 transitions. [2023-12-24 22:45:11,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-24 22:45:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 236 transitions. [2023-12-24 22:45:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-24 22:45:11,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:11,611 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:11,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-24 22:45:11,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 22:45:12,015 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 22:45:12,015 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -417007363, now seen corresponding path program 5 times [2023-12-24 22:45:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271787275] [2023-12-24 22:45:12,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:45:12,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:12,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:12,017 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) [2023-12-24 22:45:12,042 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 [2023-12-24 22:45:12,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-12-24 22:45:12,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:12,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-24 22:45:12,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 871 proven. 825 refuted. 0 times theorem prover too weak. 2442 trivial. 0 not checked. [2023-12-24 22:45:13,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 844 proven. 672 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2023-12-24 22:45:18,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:45:18,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271787275] [2023-12-24 22:45:18,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271787275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:45:18,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:45:18,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 47 [2023-12-24 22:45:18,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730827554] [2023-12-24 22:45:18,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:45:18,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-24 22:45:18,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:45:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-24 22:45:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 22:45:18,695 INFO L87 Difference]: Start difference. First operand 198 states and 236 transitions. Second operand has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) [2023-12-24 22:45:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:43,161 INFO L93 Difference]: Finished difference Result 280 states and 350 transitions. [2023-12-24 22:45:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-24 22:45:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) Word has length 267 [2023-12-24 22:45:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:43,166 INFO L225 Difference]: With dead ends: 280 [2023-12-24 22:45:43,166 INFO L226 Difference]: Without dead ends: 278 [2023-12-24 22:45:43,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 486 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2802 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=2604, Invalid=8108, Unknown=0, NotChecked=0, Total=10712 [2023-12-24 22:45:43,168 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 133 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:43,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1384 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 22:45:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-24 22:45:43,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-24 22:45:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 164 states have internal predecessors, (164), 92 states have call successors, (92), 22 states have call predecessors, (92), 22 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 22:45:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 348 transitions. [2023-12-24 22:45:43,208 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 348 transitions. Word has length 267 [2023-12-24 22:45:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:43,209 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 348 transitions. [2023-12-24 22:45:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) [2023-12-24 22:45:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 348 transitions. [2023-12-24 22:45:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-24 22:45:43,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:43,212 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:43,216 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 (19)] Ended with exit code 0 [2023-12-24 22:45:43,416 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 [2023-12-24 22:45:43,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:43,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1715335296, now seen corresponding path program 6 times [2023-12-24 22:45:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355864788] [2023-12-24 22:45:43,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:45:43,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:43,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:43,418 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) [2023-12-24 22:45:43,436 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 [2023-12-24 22:45:43,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 22:45:43,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:45:43,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:45:43,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6547 backedges. 418 proven. 105 refuted. 0 times theorem prover too weak. 6024 trivial. 0 not checked. [2023-12-24 22:45:43,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:45:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6547 backedges. 509 proven. 14 refuted. 0 times theorem prover too weak. 6024 trivial. 0 not checked. [2023-12-24 22:45:43,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:45:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355864788] [2023-12-24 22:45:43,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355864788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:45:43,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:45:43,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-24 22:45:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565535877] [2023-12-24 22:45:43,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:45:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 22:45:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:45:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 22:45:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:45:43,873 INFO L87 Difference]: Start difference. First operand 278 states and 348 transitions. Second operand has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-24 22:45:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:45:44,037 INFO L93 Difference]: Finished difference Result 284 states and 353 transitions. [2023-12-24 22:45:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 22:45:44,038 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 334 [2023-12-24 22:45:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:45:44,039 INFO L225 Difference]: With dead ends: 284 [2023-12-24 22:45:44,039 INFO L226 Difference]: Without dead ends: 282 [2023-12-24 22:45:44,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:45:44,041 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:45:44,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 93 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:45:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-24 22:45:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-24 22:45:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 167 states have internal predecessors, (167), 92 states have call successors, (92), 23 states have call predecessors, (92), 23 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 22:45:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 351 transitions. [2023-12-24 22:45:44,093 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 351 transitions. Word has length 334 [2023-12-24 22:45:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:45:44,094 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 351 transitions. [2023-12-24 22:45:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-24 22:45:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 351 transitions. [2023-12-24 22:45:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-24 22:45:44,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:45:44,099 INFO L195 NwaCegarLoop]: trace histogram [92, 91, 91, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-12-24 22:45:44,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-24 22:45:44,301 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 [2023-12-24 22:45:44,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:45:44,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:45:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 282796661, now seen corresponding path program 7 times [2023-12-24 22:45:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:45:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232341703] [2023-12-24 22:45:44,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:45:44,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:45:44,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:45:44,303 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) [2023-12-24 22:45:44,327 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 [2023-12-24 22:45:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:45:44,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-24 22:45:44,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:45:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18586 backedges. 851 proven. 2147 refuted. 0 times theorem prover too weak. 15588 trivial. 0 not checked. [2023-12-24 22:45:48,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18586 backedges. 851 proven. 2147 refuted. 0 times theorem prover too weak. 15588 trivial. 0 not checked. [2023-12-24 22:46:04,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:04,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232341703] [2023-12-24 22:46:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232341703] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:04,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36] total 72 [2023-12-24 22:46:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934640392] [2023-12-24 22:46:04,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:04,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-24 22:46:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-24 22:46:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=4029, Unknown=0, NotChecked=0, Total=5112 [2023-12-24 22:46:04,186 INFO L87 Difference]: Start difference. First operand 282 states and 351 transitions. Second operand has 72 states, 68 states have (on average 3.0) internal successors, (204), 65 states have internal predecessors, (204), 56 states have call successors, (184), 3 states have call predecessors, (184), 2 states have return successors, (182), 62 states have call predecessors, (182), 56 states have call successors, (182) [2023-12-24 22:46:17,050 WARN L293 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 192 DAG size of output: 191 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:46:30,156 WARN L293 SmtUtils]: Spent 10.43s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:46:43,574 WARN L293 SmtUtils]: Spent 11.16s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:46:52,989 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:47:08,059 WARN L293 SmtUtils]: Spent 12.74s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:47:21,983 WARN L293 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 175 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:47:31,898 WARN L293 SmtUtils]: Spent 8.82s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:47:45,159 WARN L293 SmtUtils]: Spent 11.50s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:47:57,815 WARN L293 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:06,866 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:19,011 WARN L293 SmtUtils]: Spent 10.53s on a formula simplification that was a NOOP. DAG size: 160 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:28,911 WARN L293 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:38,146 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:48,932 WARN L293 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:48:57,594 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:04,867 WARN L293 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:12,776 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:20,721 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 143 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:28,476 WARN L293 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:35,092 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:49:42,077 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:51:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:18,138 INFO L93 Difference]: Finished difference Result 488 states and 650 transitions. [2023-12-24 22:51:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-12-24 22:51:18,139 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 3.0) internal successors, (204), 65 states have internal predecessors, (204), 56 states have call successors, (184), 3 states have call predecessors, (184), 2 states have return successors, (182), 62 states have call predecessors, (182), 56 states have call successors, (182) Word has length 555 [2023-12-24 22:51:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:18,141 INFO L225 Difference]: With dead ends: 488 [2023-12-24 22:51:18,141 INFO L226 Difference]: Without dead ends: 486 [2023-12-24 22:51:18,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9507 ImplicationChecksByTransitivity, 312.4s TimeCoverageRelationStatistics Valid=7881, Invalid=23625, Unknown=0, NotChecked=0, Total=31506 [2023-12-24 22:51:18,150 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 350 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 4837 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 5376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 4837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:18,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 4817 Invalid, 5376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [539 Valid, 4837 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-24 22:51:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-24 22:51:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2023-12-24 22:51:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 271 states have (on average 1.003690036900369) internal successors, (272), 272 states have internal predecessors, (272), 188 states have call successors, (188), 26 states have call predecessors, (188), 26 states have return successors, (188), 187 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-24 22:51:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 648 transitions. [2023-12-24 22:51:18,285 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 648 transitions. Word has length 555 [2023-12-24 22:51:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:18,285 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 648 transitions. [2023-12-24 22:51:18,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 3.0) internal successors, (204), 65 states have internal predecessors, (204), 56 states have call successors, (184), 3 states have call predecessors, (184), 2 states have return successors, (182), 62 states have call predecessors, (182), 56 states have call successors, (182) [2023-12-24 22:51:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 648 transitions. [2023-12-24 22:51:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2023-12-24 22:51:18,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:18,295 INFO L195 NwaCegarLoop]: trace histogram [188, 187, 187, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:18,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-24 22:51:18,501 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 [2023-12-24 22:51:18,502 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:18,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 975099237, now seen corresponding path program 8 times [2023-12-24 22:51:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472310413] [2023-12-24 22:51:18,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:51:18,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:51:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:18,504 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) [2023-12-24 22:51:18,505 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 [2023-12-24 22:51:19,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:51:19,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:19,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 162 conjunts are in the unsatisfiable core [2023-12-24 22:51:19,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 78586 backedges. 1787 proven. 8891 refuted. 0 times theorem prover too weak. 67908 trivial. 0 not checked. [2023-12-24 22:51:29,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 78586 backedges. 1787 proven. 8891 refuted. 0 times theorem prover too weak. 67908 trivial. 0 not checked. [2023-12-24 22:52:10,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:10,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472310413] [2023-12-24 22:52:10,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472310413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:10,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 60] total 120 [2023-12-24 22:52:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988558166] [2023-12-24 22:52:10,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:10,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-24 22:52:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-24 22:52:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3192, Invalid=11088, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 22:52:10,416 INFO L87 Difference]: Start difference. First operand 486 states and 648 transitions. Second operand has 120 states, 116 states have (on average 3.413793103448276) internal successors, (396), 113 states have internal predecessors, (396), 104 states have call successors, (376), 3 states have call predecessors, (376), 2 states have return successors, (374), 110 states have call predecessors, (374), 104 states have call successors, (374) [2023-12-24 22:53:09,544 WARN L293 SmtUtils]: Spent 39.95s on a formula simplification. DAG size of input: 384 DAG size of output: 383 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:53:12,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 22:54:40,186 WARN L293 SmtUtils]: Spent 1.36m on a formula simplification that was a NOOP. DAG size: 376 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:56:17,656 WARN L293 SmtUtils]: Spent 1.50m on a formula simplification that was a NOOP. DAG size: 375 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:57:38,897 WARN L293 SmtUtils]: Spent 1.27m on a formula simplification that was a NOOP. DAG size: 372 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:57:41,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 22:59:01,870 WARN L293 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 368 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 22:59:30,222 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:59:30,222 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:59:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-24 22:59:31,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2356 GetRequests, 2142 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9674 ImplicationChecksByTransitivity, 419.3s TimeCoverageRelationStatistics Valid=9118, Invalid=36892, Unknown=0, NotChecked=0, Total=46010 [2023-12-24 22:59:31,006 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 177 mSDsluCounter, 15926 mSDsCounter, 0 mSdLazyCounter, 15293 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 15799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 15293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:59:31,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 16215 Invalid, 15799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 15293 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2023-12-24 22:59:31,007 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:59:31,025 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 [2023-12-24 22:59:31,225 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 [2023-12-24 22:59:31,225 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (486states) and FLOYD_HOARE automaton (currently 109 states, 120 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-48-8-1 term,while SimplifyDDA2 was simplifying 8 xjuncts wrt. a ∧-47-8-1 context. [2023-12-24 22:59:31,228 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:59:31,230 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:59:31,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:59:31 BoogieIcfgContainer [2023-12-24 22:59:31,231 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:59:31,232 INFO L158 Benchmark]: Toolchain (without parser) took 883711.21ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 265.6MB in the beginning and 348.5MB in the end (delta: -82.9MB). Peak memory consumption was 273.2MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,256 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 203.4MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:59:31,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.16ms. Allocated memory is still 306.2MB. Free memory was 265.2MB in the beginning and 254.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.01ms. Allocated memory is still 306.2MB. Free memory was 254.0MB in the beginning and 252.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,260 INFO L158 Benchmark]: Boogie Preprocessor took 32.21ms. Allocated memory is still 306.2MB. Free memory was 252.4MB in the beginning and 250.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,260 INFO L158 Benchmark]: RCFGBuilder took 322.14ms. Allocated memory is still 306.2MB. Free memory was 250.5MB in the beginning and 238.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,261 INFO L158 Benchmark]: TraceAbstraction took 883142.73ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 237.3MB in the beginning and 348.5MB in the end (delta: -111.2MB). Peak memory consumption was 244.8MB. Max. memory is 8.0GB. [2023-12-24 22:59:31,261 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 203.4MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.16ms. Allocated memory is still 306.2MB. Free memory was 265.2MB in the beginning and 254.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.01ms. Allocated memory is still 306.2MB. Free memory was 254.0MB in the beginning and 252.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.21ms. Allocated memory is still 306.2MB. Free memory was 252.4MB in the beginning and 250.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 322.14ms. Allocated memory is still 306.2MB. Free memory was 250.5MB in the beginning and 238.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 883142.73ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 237.3MB in the beginning and 348.5MB in the end (delta: -111.2MB). Peak memory consumption was 244.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (486states) and FLOYD_HOARE automaton (currently 109 states, 120 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-48-8-1 term,while SimplifyDDA2 was simplifying 8 xjuncts wrt. a ∧-47-8-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 883.1s, OverallIterations: 20, TraceHistogramMax: 188, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 790.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1741 SdHoareTripleChecker+Valid, 36.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1596 mSDsluCounter, 26887 SdHoareTripleChecker+Invalid, 33.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25727 mSDsCounter, 2364 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25241 IncrementalHoareTripleChecker+Invalid, 27605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2364 mSolverCounterUnsat, 1160 mSDtfsCounter, 25241 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6914 GetRequests, 6103 SyntacticMatches, 3 SemanticMatches, 807 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23910 ImplicationChecksByTransitivity, 766.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=19, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 163 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 85.0s InterpolantComputationTime, 3501 NumberOfCodeBlocks, 2995 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 6451 ConstructedInterpolants, 22 QuantifiedInterpolants, 48484 SizeOfPredicates, 180 NumberOfNonLiveVariables, 4449 ConjunctsInSsa, 536 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 203004/227540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown