/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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:56:40,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:56:40,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 23:56:40,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:56:40,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:56:40,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:56:40,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:56:40,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:56:40,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:56:40,138 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:56:40,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:56:40,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:56:40,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:56:40,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:56:40,140 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:56:40,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:56:40,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:56:40,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:56:40,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:56:40,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:56:40,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:56:40,154 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:56:40,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:56:40,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:56:40,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:56:40,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:56:40,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:56:40,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:56:40,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:56:40,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:56:40,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:56:40,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:56:40,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:56:40,156 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:56:40,156 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:56:40,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:56:40,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:56:40,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:56:40,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:56:40,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:56:40,157 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:56:40,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:56:40,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:56:40,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:56:40,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:56:40,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:56:40,370 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:56:40,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-21 23:56:41,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:56:41,780 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:56:41,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-21 23:56:41,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7248578e2/3e27b877da924c228bbf85e1858e62fb/FLAGf97b7a451 [2023-12-21 23:56:41,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7248578e2/3e27b877da924c228bbf85e1858e62fb [2023-12-21 23:56:41,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:56:41,820 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:56:41,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:56:41,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:56:41,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:56:41,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:41" (1/1) ... [2023-12-21 23:56:41,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5b7a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:41, skipping insertion in model container [2023-12-21 23:56:41,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:41" (1/1) ... [2023-12-21 23:56:41,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:56:42,207 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[6450,6463] [2023-12-21 23:56:42,233 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[7292,7305] [2023-12-21 23:56:42,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:56:42,841 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:56:42,873 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[6450,6463] [2023-12-21 23:56:42,875 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[7292,7305] [2023-12-21 23:56:43,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:56:43,252 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:56:43,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43 WrapperNode [2023-12-21 23:56:43,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:56:43,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:56:43,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:56:43,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:56:43,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,427 INFO L138 Inliner]: procedures = 36, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4962 [2023-12-21 23:56:43,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:56:43,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:56:43,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:56:43,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:56:43,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,600 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]. [2023-12-21 23:56:43,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:56:43,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:56:43,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:56:43,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:56:43,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (1/1) ... [2023-12-21 23:56:43,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:56:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:56:43,841 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) [2023-12-21 23:56:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:56:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:56:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:56:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:56:43,874 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 [2023-12-21 23:56:43,967 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:56:43,968 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:57:08,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:57:08,465 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:57:08,465 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 23:57:08,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:57:08 BoogieIcfgContainer [2023-12-21 23:57:08,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:57:08,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:57:08,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:57:08,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:57:08,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:56:41" (1/3) ... [2023-12-21 23:57:08,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e62781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:57:08, skipping insertion in model container [2023-12-21 23:57:08,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:43" (2/3) ... [2023-12-21 23:57:08,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e62781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:57:08, skipping insertion in model container [2023-12-21 23:57:08,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:57:08" (3/3) ... [2023-12-21 23:57:08,472 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-21 23:57:08,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:57:08,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:57:08,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:57:08,545 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;@4455e2d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:57:08,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:57:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 23:57:08,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:08,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 23:57:08,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:08,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1085854336, now seen corresponding path program 1 times [2023-12-21 23:57:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294247664] [2023-12-21 23:57:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:08,576 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 [2023-12-21 23:57:08,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:08,578 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) [2023-12-21 23:57:08,610 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 [2023-12-21 23:57:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:08,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:08,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:08,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:08,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:08,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294247664] [2023-12-21 23:57:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294247664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:57:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671640491] [2023-12-21 23:57:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:08,732 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:41,074 INFO L93 Difference]: Finished difference Result 2351 states and 4652 transitions. [2023-12-21 23:57:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 23:57:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:41,100 INFO L225 Difference]: With dead ends: 2351 [2023-12-21 23:57:41,100 INFO L226 Difference]: Without dead ends: 1556 [2023-12-21 23:57:41,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:41,110 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 861 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:41,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 310 Invalid, 2981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 32.1s Time] [2023-12-21 23:57:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-21 23:57:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-21 23:57:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.7728442728442728) internal successors, (2755), 1555 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2755 transitions. [2023-12-21 23:57:41,204 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2755 transitions. Word has length 6 [2023-12-21 23:57:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:41,204 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2755 transitions. [2023-12-21 23:57:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2755 transitions. [2023-12-21 23:57:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:57:41,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:41,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:41,225 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 [2023-12-21 23:57:41,409 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 [2023-12-21 23:57:41,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:41,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2107674030, now seen corresponding path program 1 times [2023-12-21 23:57:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202630265] [2023-12-21 23:57:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:41,416 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 [2023-12-21 23:57:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:41,417 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) [2023-12-21 23:57:41,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 23:57:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:41,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:57:41,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:41,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:41,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:41,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202630265] [2023-12-21 23:57:41,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202630265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:41,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:41,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:57:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812964386] [2023-12-21 23:57:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:57:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:57:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:41,506 INFO L87 Difference]: Start difference. First operand 1556 states and 2755 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:41,554 INFO L93 Difference]: Finished difference Result 1590 states and 2807 transitions. [2023-12-21 23:57:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:57:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 23:57:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:41,560 INFO L225 Difference]: With dead ends: 1590 [2023-12-21 23:57:41,560 INFO L226 Difference]: Without dead ends: 1556 [2023-12-21 23:57:41,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:41,561 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:41,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-21 23:57:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-21 23:57:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.7625482625482625) internal successors, (2739), 1555 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2739 transitions. [2023-12-21 23:57:41,583 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2739 transitions. Word has length 17 [2023-12-21 23:57:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:41,583 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2739 transitions. [2023-12-21 23:57:41,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2739 transitions. [2023-12-21 23:57:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 23:57:41,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:41,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:41,588 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 [2023-12-21 23:57:41,788 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 [2023-12-21 23:57:41,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:41,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1024653184, now seen corresponding path program 1 times [2023-12-21 23:57:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:41,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976006763] [2023-12-21 23:57:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:41,791 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 [2023-12-21 23:57:41,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:41,792 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) [2023-12-21 23:57:41,808 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 [2023-12-21 23:57:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:41,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:57:41,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:42,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:42,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976006763] [2023-12-21 23:57:42,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976006763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:42,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:42,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:57:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150294471] [2023-12-21 23:57:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:57:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:57:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:42,117 INFO L87 Difference]: Start difference. First operand 1556 states and 2739 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:42,225 INFO L93 Difference]: Finished difference Result 1680 states and 2935 transitions. [2023-12-21 23:57:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:57:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 23:57:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:42,231 INFO L225 Difference]: With dead ends: 1680 [2023-12-21 23:57:42,231 INFO L226 Difference]: Without dead ends: 1649 [2023-12-21 23:57:42,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:42,234 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4558 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:42,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 1627 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:57:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2023-12-21 23:57:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1614. [2023-12-21 23:57:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.7568238213399503) internal successors, (2832), 1613 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2832 transitions. [2023-12-21 23:57:42,261 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2832 transitions. Word has length 32 [2023-12-21 23:57:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:42,262 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2832 transitions. [2023-12-21 23:57:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2832 transitions. [2023-12-21 23:57:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 23:57:42,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:42,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:42,269 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 [2023-12-21 23:57:42,469 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 [2023-12-21 23:57:42,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:42,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1266889168, now seen corresponding path program 1 times [2023-12-21 23:57:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262316315] [2023-12-21 23:57:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:42,471 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 [2023-12-21 23:57:42,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:42,475 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) [2023-12-21 23:57:42,475 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 [2023-12-21 23:57:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:42,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:42,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:42,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:42,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262316315] [2023-12-21 23:57:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262316315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830216022] [2023-12-21 23:57:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:42,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:42,606 INFO L87 Difference]: Start difference. First operand 1614 states and 2832 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:42,646 INFO L93 Difference]: Finished difference Result 1776 states and 3088 transitions. [2023-12-21 23:57:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:42,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 23:57:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:42,652 INFO L225 Difference]: With dead ends: 1776 [2023-12-21 23:57:42,652 INFO L226 Difference]: Without dead ends: 1687 [2023-12-21 23:57:42,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:42,653 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:42,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2023-12-21 23:57:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1682. [2023-12-21 23:57:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1680 states have (on average 1.7464285714285714) internal successors, (2934), 1681 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2934 transitions. [2023-12-21 23:57:42,679 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2934 transitions. Word has length 34 [2023-12-21 23:57:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:42,679 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2934 transitions. [2023-12-21 23:57:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2934 transitions. [2023-12-21 23:57:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 23:57:42,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:42,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:42,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 23:57:42,883 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 [2023-12-21 23:57:42,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:42,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -680719856, now seen corresponding path program 1 times [2023-12-21 23:57:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:42,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386863149] [2023-12-21 23:57:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:42,884 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 [2023-12-21 23:57:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:42,885 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) [2023-12-21 23:57:42,910 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 [2023-12-21 23:57:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:42,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:57:42,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:42,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:42,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386863149] [2023-12-21 23:57:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386863149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:57:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811789637] [2023-12-21 23:57:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:57:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:57:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:42,979 INFO L87 Difference]: Start difference. First operand 1682 states and 2934 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:43,028 INFO L93 Difference]: Finished difference Result 1696 states and 2951 transitions. [2023-12-21 23:57:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:57:43,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 23:57:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:43,034 INFO L225 Difference]: With dead ends: 1696 [2023-12-21 23:57:43,034 INFO L226 Difference]: Without dead ends: 1694 [2023-12-21 23:57:43,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:43,035 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:43,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-12-21 23:57:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1690. [2023-12-21 23:57:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.742298578199052) internal successors, (2941), 1689 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2941 transitions. [2023-12-21 23:57:43,061 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2941 transitions. Word has length 35 [2023-12-21 23:57:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:43,062 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2941 transitions. [2023-12-21 23:57:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2941 transitions. [2023-12-21 23:57:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:57:43,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:43,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:43,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:43,273 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 [2023-12-21 23:57:43,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:43,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -665802232, now seen corresponding path program 1 times [2023-12-21 23:57:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212367986] [2023-12-21 23:57:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:43,275 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 [2023-12-21 23:57:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:43,276 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) [2023-12-21 23:57:43,305 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 [2023-12-21 23:57:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:43,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:43,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:43,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:43,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212367986] [2023-12-21 23:57:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212367986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85050902] [2023-12-21 23:57:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:43,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:43,375 INFO L87 Difference]: Start difference. First operand 1690 states and 2941 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:43,414 INFO L93 Difference]: Finished difference Result 1996 states and 3401 transitions. [2023-12-21 23:57:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:57:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:43,420 INFO L225 Difference]: With dead ends: 1996 [2023-12-21 23:57:43,421 INFO L226 Difference]: Without dead ends: 1831 [2023-12-21 23:57:43,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:43,423 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:43,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-12-21 23:57:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2023-12-21 23:57:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1827 states have (on average 1.7203065134099618) internal successors, (3143), 1828 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 3143 transitions. [2023-12-21 23:57:43,454 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 3143 transitions. Word has length 36 [2023-12-21 23:57:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:43,455 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 3143 transitions. [2023-12-21 23:57:43,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 3143 transitions. [2023-12-21 23:57:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:57:43,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:43,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:43,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:43,659 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 [2023-12-21 23:57:43,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:43,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1554535672, now seen corresponding path program 1 times [2023-12-21 23:57:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193322645] [2023-12-21 23:57:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:43,660 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 [2023-12-21 23:57:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:43,689 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) [2023-12-21 23:57:43,744 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 [2023-12-21 23:57:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:43,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:43,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:43,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:43,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193322645] [2023-12-21 23:57:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193322645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:43,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:43,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:43,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122021988] [2023-12-21 23:57:43,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:43,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:43,826 INFO L87 Difference]: Start difference. First operand 1829 states and 3143 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:43,866 INFO L93 Difference]: Finished difference Result 2389 states and 3965 transitions. [2023-12-21 23:57:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:43,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:57:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:43,873 INFO L225 Difference]: With dead ends: 2389 [2023-12-21 23:57:43,874 INFO L226 Difference]: Without dead ends: 2085 [2023-12-21 23:57:43,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:43,875 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:43,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2023-12-21 23:57:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2023-12-21 23:57:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2081 states have (on average 1.6814031715521385) internal successors, (3499), 2082 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3499 transitions. [2023-12-21 23:57:43,913 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3499 transitions. Word has length 36 [2023-12-21 23:57:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:43,913 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 3499 transitions. [2023-12-21 23:57:43,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3499 transitions. [2023-12-21 23:57:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 23:57:43,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:43,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:43,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:44,117 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 [2023-12-21 23:57:44,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1381367059, now seen corresponding path program 1 times [2023-12-21 23:57:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:44,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466854493] [2023-12-21 23:57:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:44,119 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 [2023-12-21 23:57:44,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:44,133 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) [2023-12-21 23:57:44,140 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 [2023-12-21 23:57:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:44,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:44,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:44,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:44,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:44,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466854493] [2023-12-21 23:57:44,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466854493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:44,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:44,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:44,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939678718] [2023-12-21 23:57:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:44,241 INFO L87 Difference]: Start difference. First operand 2083 states and 3499 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:44,279 INFO L93 Difference]: Finished difference Result 2666 states and 4369 transitions. [2023-12-21 23:57:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 23:57:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:44,286 INFO L225 Difference]: With dead ends: 2666 [2023-12-21 23:57:44,286 INFO L226 Difference]: Without dead ends: 2339 [2023-12-21 23:57:44,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:44,288 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:44,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2023-12-21 23:57:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2337. [2023-12-21 23:57:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2335 states have (on average 1.6535331905781585) internal successors, (3861), 2336 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3861 transitions. [2023-12-21 23:57:44,322 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3861 transitions. Word has length 38 [2023-12-21 23:57:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:44,322 INFO L495 AbstractCegarLoop]: Abstraction has 2337 states and 3861 transitions. [2023-12-21 23:57:44,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3861 transitions. [2023-12-21 23:57:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:57:44,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:44,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:44,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:44,526 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 [2023-12-21 23:57:44,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 514089809, now seen corresponding path program 1 times [2023-12-21 23:57:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57578038] [2023-12-21 23:57:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:44,528 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 [2023-12-21 23:57:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:44,546 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) [2023-12-21 23:57:44,610 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 [2023-12-21 23:57:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:44,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:44,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:44,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:44,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57578038] [2023-12-21 23:57:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57578038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:44,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:44,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:44,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936671582] [2023-12-21 23:57:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:44,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:44,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:44,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:44,696 INFO L87 Difference]: Start difference. First operand 2337 states and 3861 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:44,734 INFO L93 Difference]: Finished difference Result 2932 states and 4731 transitions. [2023-12-21 23:57:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:57:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:44,741 INFO L225 Difference]: With dead ends: 2932 [2023-12-21 23:57:44,741 INFO L226 Difference]: Without dead ends: 2122 [2023-12-21 23:57:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:44,744 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:44,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-21 23:57:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2120. [2023-12-21 23:57:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2118 states have (on average 1.6751652502360717) internal successors, (3548), 2119 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3548 transitions. [2023-12-21 23:57:44,782 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3548 transitions. Word has length 50 [2023-12-21 23:57:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:44,782 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3548 transitions. [2023-12-21 23:57:44,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3548 transitions. [2023-12-21 23:57:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 23:57:44,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:44,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:44,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-21 23:57:44,987 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 [2023-12-21 23:57:44,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:44,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1376481802, now seen corresponding path program 1 times [2023-12-21 23:57:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:44,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325955742] [2023-12-21 23:57:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:44,992 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 [2023-12-21 23:57:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:44,993 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) [2023-12-21 23:57:45,009 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 [2023-12-21 23:57:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:45,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:57:45,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:45,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:46,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325955742] [2023-12-21 23:57:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325955742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:46,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:57:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108747229] [2023-12-21 23:57:46,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:57:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:57:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:57:46,029 INFO L87 Difference]: Start difference. First operand 2120 states and 3548 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:47,390 INFO L93 Difference]: Finished difference Result 3648 states and 5719 transitions. [2023-12-21 23:57:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:57:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 23:57:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:47,398 INFO L225 Difference]: With dead ends: 3648 [2023-12-21 23:57:47,398 INFO L226 Difference]: Without dead ends: 3070 [2023-12-21 23:57:47,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-21 23:57:47,400 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 4866 mSDsluCounter, 10575 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 12087 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:47,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4866 Valid, 12087 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 23:57:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2023-12-21 23:57:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2696. [2023-12-21 23:57:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2694 states have (on average 1.6243504083147735) internal successors, (4376), 2695 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4376 transitions. [2023-12-21 23:57:47,450 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4376 transitions. Word has length 52 [2023-12-21 23:57:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:47,450 INFO L495 AbstractCegarLoop]: Abstraction has 2696 states and 4376 transitions. [2023-12-21 23:57:47,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4376 transitions. [2023-12-21 23:57:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 23:57:47,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:47,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:47,473 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 [2023-12-21 23:57:47,659 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 [2023-12-21 23:57:47,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1336668790, now seen corresponding path program 1 times [2023-12-21 23:57:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443400803] [2023-12-21 23:57:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:47,660 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 [2023-12-21 23:57:47,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:47,661 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) [2023-12-21 23:57:47,680 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 [2023-12-21 23:57:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:47,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:47,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:47,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:47,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443400803] [2023-12-21 23:57:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443400803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:47,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686798652] [2023-12-21 23:57:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:47,762 INFO L87 Difference]: Start difference. First operand 2696 states and 4376 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:47,797 INFO L93 Difference]: Finished difference Result 3276 states and 5212 transitions. [2023-12-21 23:57:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 23:57:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:47,803 INFO L225 Difference]: With dead ends: 3276 [2023-12-21 23:57:47,803 INFO L226 Difference]: Without dead ends: 2122 [2023-12-21 23:57:47,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:47,805 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 28 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:47,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-21 23:57:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2120. [2023-12-21 23:57:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2118 states have (on average 1.6666666666666667) internal successors, (3530), 2119 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3530 transitions. [2023-12-21 23:57:47,845 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3530 transitions. Word has length 54 [2023-12-21 23:57:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:47,846 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3530 transitions. [2023-12-21 23:57:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3530 transitions. [2023-12-21 23:57:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 23:57:47,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:47,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:47,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:48,050 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 [2023-12-21 23:57:48,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:48,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1843229277, now seen corresponding path program 1 times [2023-12-21 23:57:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:48,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746540907] [2023-12-21 23:57:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:48,052 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 [2023-12-21 23:57:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:48,053 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) [2023-12-21 23:57:48,075 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 [2023-12-21 23:57:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:48,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:57:48,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:48,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:49,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746540907] [2023-12-21 23:57:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746540907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:49,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:49,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:57:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661284216] [2023-12-21 23:57:49,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:49,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:57:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:57:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:57:49,008 INFO L87 Difference]: Start difference. First operand 2120 states and 3530 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:50,233 INFO L93 Difference]: Finished difference Result 3700 states and 5742 transitions. [2023-12-21 23:57:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 23:57:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 23:57:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:50,242 INFO L225 Difference]: With dead ends: 3700 [2023-12-21 23:57:50,242 INFO L226 Difference]: Without dead ends: 3122 [2023-12-21 23:57:50,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-21 23:57:50,243 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 6266 mSDsluCounter, 12044 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6266 SdHoareTripleChecker+Valid, 13575 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:50,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6266 Valid, 13575 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 23:57:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2023-12-21 23:57:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2768. [2023-12-21 23:57:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2766 states have (on average 1.5950831525668836) internal successors, (4412), 2767 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4412 transitions. [2023-12-21 23:57:50,294 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4412 transitions. Word has length 55 [2023-12-21 23:57:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:50,295 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4412 transitions. [2023-12-21 23:57:50,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4412 transitions. [2023-12-21 23:57:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 23:57:50,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:50,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:50,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-21 23:57:50,498 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 [2023-12-21 23:57:50,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:50,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2098507473, now seen corresponding path program 1 times [2023-12-21 23:57:50,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451511333] [2023-12-21 23:57:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:50,499 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 [2023-12-21 23:57:50,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:50,500 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) [2023-12-21 23:57:50,527 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 [2023-12-21 23:57:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:50,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:50,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:50,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:50,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451511333] [2023-12-21 23:57:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451511333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427378857] [2023-12-21 23:57:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:50,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:50,584 INFO L87 Difference]: Start difference. First operand 2768 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:50,617 INFO L93 Difference]: Finished difference Result 3330 states and 5186 transitions. [2023-12-21 23:57:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:57:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 23:57:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:50,622 INFO L225 Difference]: With dead ends: 3330 [2023-12-21 23:57:50,622 INFO L226 Difference]: Without dead ends: 2104 [2023-12-21 23:57:50,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:50,624 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 24 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:50,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:57:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2023-12-21 23:57:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2102. [2023-12-21 23:57:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2100 states have (on average 1.651904761904762) internal successors, (3469), 2101 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3469 transitions. [2023-12-21 23:57:50,663 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3469 transitions. Word has length 57 [2023-12-21 23:57:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:50,663 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 3469 transitions. [2023-12-21 23:57:50,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3469 transitions. [2023-12-21 23:57:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 23:57:50,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:50,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:50,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:50,868 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 [2023-12-21 23:57:50,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:50,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -70777590, now seen corresponding path program 1 times [2023-12-21 23:57:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175810345] [2023-12-21 23:57:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:50,869 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 [2023-12-21 23:57:50,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:50,870 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) [2023-12-21 23:57:50,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 23:57:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:50,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:57:50,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:51,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:51,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175810345] [2023-12-21 23:57:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175810345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:51,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:57:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315152755] [2023-12-21 23:57:51,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:51,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:57:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:57:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:57:51,717 INFO L87 Difference]: Start difference. First operand 2102 states and 3469 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:52,616 INFO L93 Difference]: Finished difference Result 3176 states and 4902 transitions. [2023-12-21 23:57:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 23:57:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 23:57:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:52,628 INFO L225 Difference]: With dead ends: 3176 [2023-12-21 23:57:52,628 INFO L226 Difference]: Without dead ends: 2616 [2023-12-21 23:57:52,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 23:57:52,630 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1818 mSDsluCounter, 10525 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 12038 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:52,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 12038 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 23:57:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2023-12-21 23:57:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2498. [2023-12-21 23:57:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2496 states have (on average 1.594150641025641) internal successors, (3979), 2497 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3979 transitions. [2023-12-21 23:57:52,670 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3979 transitions. Word has length 58 [2023-12-21 23:57:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3979 transitions. [2023-12-21 23:57:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3979 transitions. [2023-12-21 23:57:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 23:57:52,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:52,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:52,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:52,874 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 [2023-12-21 23:57:52,874 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:52,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash -206814174, now seen corresponding path program 1 times [2023-12-21 23:57:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:52,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625746100] [2023-12-21 23:57:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:52,875 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 [2023-12-21 23:57:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:52,877 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) [2023-12-21 23:57:52,878 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 [2023-12-21 23:57:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:52,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:57:52,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:57:53,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:57:53,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:53,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625746100] [2023-12-21 23:57:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625746100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:53,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:53,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:57:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668855314] [2023-12-21 23:57:53,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:57:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:57:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:57:53,122 INFO L87 Difference]: Start difference. First operand 2498 states and 3979 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:53,237 INFO L93 Difference]: Finished difference Result 4402 states and 6445 transitions. [2023-12-21 23:57:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:57:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 23:57:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:53,242 INFO L225 Difference]: With dead ends: 4402 [2023-12-21 23:57:53,242 INFO L226 Difference]: Without dead ends: 3446 [2023-12-21 23:57:53,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:57:53,245 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4384 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:53,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4384 Valid, 3089 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:57:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2023-12-21 23:57:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3426. [2023-12-21 23:57:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.469626168224299) internal successors, (5032), 3425 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5032 transitions. [2023-12-21 23:57:53,316 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5032 transitions. Word has length 60 [2023-12-21 23:57:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:53,316 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 5032 transitions. [2023-12-21 23:57:53,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5032 transitions. [2023-12-21 23:57:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 23:57:53,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:53,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:53,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:53,523 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 [2023-12-21 23:57:53,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:53,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1495687823, now seen corresponding path program 1 times [2023-12-21 23:57:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180594487] [2023-12-21 23:57:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:53,524 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 [2023-12-21 23:57:53,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:53,525 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) [2023-12-21 23:57:53,526 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 [2023-12-21 23:57:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:53,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:57:53,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:53,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:53,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180594487] [2023-12-21 23:57:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180594487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:53,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:57:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225900416] [2023-12-21 23:57:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:53,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:57:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:57:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:57:53,705 INFO L87 Difference]: Start difference. First operand 3426 states and 5032 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:58:28,935 INFO L93 Difference]: Finished difference Result 6432 states and 10367 transitions. [2023-12-21 23:58:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:58:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-21 23:58:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:58:28,955 INFO L225 Difference]: With dead ends: 6432 [2023-12-21 23:58:28,956 INFO L226 Difference]: Without dead ends: 4928 [2023-12-21 23:58:28,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:58:28,958 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 803 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:58:28,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 542 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time] [2023-12-21 23:58:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2023-12-21 23:58:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4928. [2023-12-21 23:58:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4926 states have (on average 1.4031668696711328) internal successors, (6912), 4927 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 6912 transitions. [2023-12-21 23:58:29,107 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 6912 transitions. Word has length 71 [2023-12-21 23:58:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:58:29,107 INFO L495 AbstractCegarLoop]: Abstraction has 4928 states and 6912 transitions. [2023-12-21 23:58:29,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 6912 transitions. [2023-12-21 23:58:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 23:58:29,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:58:29,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:58:29,124 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 [2023-12-21 23:58:29,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:58:29,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:58:29,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:58:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 39025430, now seen corresponding path program 1 times [2023-12-21 23:58:29,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:58:29,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816974131] [2023-12-21 23:58:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:58:29,313 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 [2023-12-21 23:58:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:58:29,314 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:58:29,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 23:58:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:58:29,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:58:29,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:58:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:58:29,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:58:29,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:58:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816974131] [2023-12-21 23:58:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816974131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:58:29,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:58:29,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:58:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249475982] [2023-12-21 23:58:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:58:29,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:58:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:58:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:58:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:58:29,486 INFO L87 Difference]: Start difference. First operand 4928 states and 6912 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:05,653 INFO L93 Difference]: Finished difference Result 10938 states and 16007 transitions. [2023-12-21 23:59:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:59:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 23:59:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:05,673 INFO L225 Difference]: With dead ends: 10938 [2023-12-21 23:59:05,673 INFO L226 Difference]: Without dead ends: 7932 [2023-12-21 23:59:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:59:05,676 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 756 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:05,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 734 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 36.0s Time] [2023-12-21 23:59:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2023-12-21 23:59:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 7932. [2023-12-21 23:59:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7932 states, 7930 states have (on average 1.2943253467843632) internal successors, (10264), 7931 states have internal predecessors, (10264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7932 states to 7932 states and 10264 transitions. [2023-12-21 23:59:05,779 INFO L78 Accepts]: Start accepts. Automaton has 7932 states and 10264 transitions. Word has length 81 [2023-12-21 23:59:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 7932 states and 10264 transitions. [2023-12-21 23:59:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7932 states and 10264 transitions. [2023-12-21 23:59:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 23:59:05,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:05,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:05,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 23:59:05,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:59:05,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -261737625, now seen corresponding path program 1 times [2023-12-21 23:59:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505749346] [2023-12-21 23:59:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:05,986 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 [2023-12-21 23:59:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:05,987 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) [2023-12-21 23:59:06,004 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 [2023-12-21 23:59:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:06,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:59:06,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:06,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:59:06,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:06,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505749346] [2023-12-21 23:59:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505749346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:59:06,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:59:06,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:59:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286951709] [2023-12-21 23:59:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:59:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:59:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:59:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:59:06,595 INFO L87 Difference]: Start difference. First operand 7932 states and 10264 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:33,986 INFO L93 Difference]: Finished difference Result 11689 states and 15485 transitions. [2023-12-21 23:59:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:59:33,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 23:59:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:34,022 INFO L225 Difference]: With dead ends: 11689 [2023-12-21 23:59:34,023 INFO L226 Difference]: Without dead ends: 8683 [2023-12-21 23:59:34,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:59:34,034 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 741 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:34,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 747 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2023-12-21 23:59:34,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8683 states. [2023-12-21 23:59:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8683 to 8683. [2023-12-21 23:59:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8683 states, 8681 states have (on average 1.2716276926621357) internal successors, (11039), 8682 states have internal predecessors, (11039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8683 states to 8683 states and 11039 transitions. [2023-12-21 23:59:34,147 INFO L78 Accepts]: Start accepts. Automaton has 8683 states and 11039 transitions. Word has length 87 [2023-12-21 23:59:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:34,147 INFO L495 AbstractCegarLoop]: Abstraction has 8683 states and 11039 transitions. [2023-12-21 23:59:34,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8683 states and 11039 transitions. [2023-12-21 23:59:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 23:59:34,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:34,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:34,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 23:59:34,356 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 [2023-12-21 23:59:34,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:34,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1684444050, now seen corresponding path program 1 times [2023-12-21 23:59:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675897252] [2023-12-21 23:59:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:34,357 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 [2023-12-21 23:59:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:34,392 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) [2023-12-21 23:59:34,395 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 [2023-12-21 23:59:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:34,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:59:34,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:35,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:36,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:36,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675897252] [2023-12-21 23:59:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675897252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:36,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:59:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657048167] [2023-12-21 23:59:36,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:59:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:59:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:59:36,064 INFO L87 Difference]: Start difference. First operand 8683 states and 11039 transitions. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:37,930 INFO L93 Difference]: Finished difference Result 9929 states and 12609 transitions. [2023-12-21 23:59:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 23:59:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 23:59:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:37,941 INFO L225 Difference]: With dead ends: 9929 [2023-12-21 23:59:37,941 INFO L226 Difference]: Without dead ends: 8717 [2023-12-21 23:59:37,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:59:37,945 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 14854 mSDsluCounter, 6269 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14854 SdHoareTripleChecker+Valid, 7767 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:37,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14854 Valid, 7767 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 23:59:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8717 states. [2023-12-21 23:59:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8717 to 8683. [2023-12-21 23:59:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8683 states, 8681 states have (on average 1.2679414813961525) internal successors, (11007), 8682 states have internal predecessors, (11007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8683 states to 8683 states and 11007 transitions. [2023-12-21 23:59:38,179 INFO L78 Accepts]: Start accepts. Automaton has 8683 states and 11007 transitions. Word has length 95 [2023-12-21 23:59:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:38,180 INFO L495 AbstractCegarLoop]: Abstraction has 8683 states and 11007 transitions. [2023-12-21 23:59:38,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8683 states and 11007 transitions. [2023-12-21 23:59:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 23:59:38,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:38,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:38,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 23:59:38,385 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 [2023-12-21 23:59:38,385 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:38,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1836538947, now seen corresponding path program 1 times [2023-12-21 23:59:38,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:38,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328655075] [2023-12-21 23:59:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:38,386 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 [2023-12-21 23:59:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:38,387 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) [2023-12-21 23:59:38,389 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 [2023-12-21 23:59:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:38,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:59:38,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:39,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:40,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328655075] [2023-12-21 23:59:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328655075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:40,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:59:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900771817] [2023-12-21 23:59:40,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:40,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:59:40,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:40,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:59:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:59:40,031 INFO L87 Difference]: Start difference. First operand 8683 states and 11007 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:42,340 INFO L93 Difference]: Finished difference Result 9597 states and 12143 transitions. [2023-12-21 23:59:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:59:42,340 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 23:59:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:42,347 INFO L225 Difference]: With dead ends: 9597 [2023-12-21 23:59:42,347 INFO L226 Difference]: Without dead ends: 8819 [2023-12-21 23:59:42,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 23:59:42,350 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 11946 mSDsluCounter, 7825 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11946 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:42,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11946 Valid, 9323 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 23:59:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8819 states. [2023-12-21 23:59:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8819 to 8683. [2023-12-21 23:59:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8683 states, 8681 states have (on average 1.266098375763161) internal successors, (10991), 8682 states have internal predecessors, (10991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8683 states to 8683 states and 10991 transitions. [2023-12-21 23:59:42,468 INFO L78 Accepts]: Start accepts. Automaton has 8683 states and 10991 transitions. Word has length 96 [2023-12-21 23:59:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:42,468 INFO L495 AbstractCegarLoop]: Abstraction has 8683 states and 10991 transitions. [2023-12-21 23:59:42,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8683 states and 10991 transitions. [2023-12-21 23:59:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:59:42,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:42,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:42,473 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 [2023-12-21 23:59:42,673 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 [2023-12-21 23:59:42,673 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:42,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1242682238, now seen corresponding path program 1 times [2023-12-21 23:59:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099320633] [2023-12-21 23:59:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:42,674 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 [2023-12-21 23:59:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:42,675 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) [2023-12-21 23:59:42,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 23:59:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:42,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:59:42,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:43,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:44,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099320633] [2023-12-21 23:59:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099320633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:44,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:59:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315003989] [2023-12-21 23:59:44,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:44,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:59:44,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:59:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:59:44,432 INFO L87 Difference]: Start difference. First operand 8683 states and 10991 transitions. Second operand has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:49,320 INFO L93 Difference]: Finished difference Result 9955 states and 12531 transitions. [2023-12-21 23:59:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 23:59:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 23:59:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:49,329 INFO L225 Difference]: With dead ends: 9955 [2023-12-21 23:59:49,329 INFO L226 Difference]: Without dead ends: 9143 [2023-12-21 23:59:49,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 23:59:49,333 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 5053 mSDsluCounter, 23050 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 24628 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:49,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5053 Valid, 24628 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 23:59:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9143 states. [2023-12-21 23:59:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9143 to 8023. [2023-12-21 23:59:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8023 states, 8021 states have (on average 1.2711631966089016) internal successors, (10196), 8022 states have internal predecessors, (10196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8023 states to 8023 states and 10196 transitions. [2023-12-21 23:59:49,485 INFO L78 Accepts]: Start accepts. Automaton has 8023 states and 10196 transitions. Word has length 97 [2023-12-21 23:59:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:49,487 INFO L495 AbstractCegarLoop]: Abstraction has 8023 states and 10196 transitions. [2023-12-21 23:59:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8023 states and 10196 transitions. [2023-12-21 23:59:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:59:49,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:49,488 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:49,510 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 [2023-12-21 23:59:49,691 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 [2023-12-21 23:59:49,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:49,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -887976666, now seen corresponding path program 1 times [2023-12-21 23:59:49,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:49,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590359032] [2023-12-21 23:59:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:49,692 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 [2023-12-21 23:59:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:49,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:59:49,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 23:59:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:49,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:59:49,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:50,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:51,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:51,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590359032] [2023-12-21 23:59:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590359032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:51,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:51,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:59:51,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251780425] [2023-12-21 23:59:51,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:59:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:59:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:59:51,229 INFO L87 Difference]: Start difference. First operand 8023 states and 10196 transitions. Second operand has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:56,575 INFO L93 Difference]: Finished difference Result 8980 states and 11353 transitions. [2023-12-21 23:59:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 23:59:56,577 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 23:59:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:56,584 INFO L225 Difference]: With dead ends: 8980 [2023-12-21 23:59:56,584 INFO L226 Difference]: Without dead ends: 8658 [2023-12-21 23:59:56,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 23:59:56,587 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 6388 mSDsluCounter, 23202 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 24789 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:56,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6388 Valid, 24789 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 23:59:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2023-12-21 23:59:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 8268. [2023-12-21 23:59:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8268 states, 8266 states have (on average 1.2685700459714493) internal successors, (10486), 8267 states have internal predecessors, (10486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 10486 transitions. [2023-12-21 23:59:56,715 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 10486 transitions. Word has length 97 [2023-12-21 23:59:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:56,715 INFO L495 AbstractCegarLoop]: Abstraction has 8268 states and 10486 transitions. [2023-12-21 23:59:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 10486 transitions. [2023-12-21 23:59:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:59:56,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:56,716 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:56,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 23:59:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:59:56,919 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:56,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 897905410, now seen corresponding path program 1 times [2023-12-21 23:59:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124728529] [2023-12-21 23:59:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:56,921 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 [2023-12-21 23:59:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:56,922 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:59:56,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 23:59:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:57,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:59:57,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:58,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:59:58,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124728529] [2023-12-21 23:59:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124728529] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:58,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:58,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:59:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001250399] [2023-12-21 23:59:58,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:59:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:59:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:59:58,551 INFO L87 Difference]: Start difference. First operand 8268 states and 10486 transitions. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:05,024 INFO L93 Difference]: Finished difference Result 10977 states and 13697 transitions. [2023-12-22 00:00:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 00:00:05,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-22 00:00:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:05,036 INFO L225 Difference]: With dead ends: 10977 [2023-12-22 00:00:05,036 INFO L226 Difference]: Without dead ends: 10544 [2023-12-22 00:00:05,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 00:00:05,039 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 3425 mSDsluCounter, 23585 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 25188 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:05,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3425 Valid, 25188 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 00:00:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2023-12-22 00:00:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 9596. [2023-12-22 00:00:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9596 states, 9594 states have (on average 1.2564102564102564) internal successors, (12054), 9595 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9596 states to 9596 states and 12054 transitions. [2023-12-22 00:00:05,284 INFO L78 Accepts]: Start accepts. Automaton has 9596 states and 12054 transitions. Word has length 97 [2023-12-22 00:00:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:05,284 INFO L495 AbstractCegarLoop]: Abstraction has 9596 states and 12054 transitions. [2023-12-22 00:00:05,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 9596 states and 12054 transitions. [2023-12-22 00:00:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 00:00:05,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:05,287 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:05,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-22 00:00:05,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:05,491 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:05,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash -490533366, now seen corresponding path program 2 times [2023-12-22 00:00:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:05,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833420012] [2023-12-22 00:00:05,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:00:05,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:05,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:05,493 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:05,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 00:00:05,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:00:05,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:00:05,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 00:00:05,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-22 00:00:06,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:00:06,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833420012] [2023-12-22 00:00:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833420012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:00:06,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:00:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 00:00:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732457462] [2023-12-22 00:00:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:00:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 00:00:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 00:00:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:06,322 INFO L87 Difference]: Start difference. First operand 9596 states and 12054 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:06,803 INFO L93 Difference]: Finished difference Result 10650 states and 13370 transitions. [2023-12-22 00:00:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 00:00:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-22 00:00:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:06,817 INFO L225 Difference]: With dead ends: 10650 [2023-12-22 00:00:06,817 INFO L226 Difference]: Without dead ends: 9732 [2023-12-22 00:00:06,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:06,822 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1533 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:06,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 3119 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:00:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2023-12-22 00:00:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 9576. [2023-12-22 00:00:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9576 states, 9574 states have (on average 1.2522456653436391) internal successors, (11989), 9575 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 11989 transitions. [2023-12-22 00:00:07,167 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 11989 transitions. Word has length 136 [2023-12-22 00:00:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:07,168 INFO L495 AbstractCegarLoop]: Abstraction has 9576 states and 11989 transitions. [2023-12-22 00:00:07,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 11989 transitions. [2023-12-22 00:00:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 00:00:07,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:07,172 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:07,189 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 (25)] Ended with exit code 0 [2023-12-22 00:00:07,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:07,376 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:07,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:07,376 INFO L85 PathProgramCache]: Analyzing trace with hash -135827794, now seen corresponding path program 2 times [2023-12-22 00:00:07,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685770807] [2023-12-22 00:00:07,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:00:07,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:07,379 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:07,406 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 (26)] Waiting until timeout for monitored process [2023-12-22 00:00:07,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:00:07,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:00:07,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 00:00:07,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-22 00:00:08,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:00:08,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685770807] [2023-12-22 00:00:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685770807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:00:08,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:00:08,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 00:00:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226131455] [2023-12-22 00:00:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:00:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 00:00:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 00:00:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:08,242 INFO L87 Difference]: Start difference. First operand 9576 states and 11989 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:08,566 INFO L93 Difference]: Finished difference Result 10225 states and 12818 transitions. [2023-12-22 00:00:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 00:00:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-22 00:00:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:08,580 INFO L225 Difference]: With dead ends: 10225 [2023-12-22 00:00:08,580 INFO L226 Difference]: Without dead ends: 9846 [2023-12-22 00:00:08,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:08,584 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 2976 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:08,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 3107 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:00:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2023-12-22 00:00:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9768. [2023-12-22 00:00:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9766 states have (on average 1.2493344255580585) internal successors, (12201), 9767 states have internal predecessors, (12201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 12201 transitions. [2023-12-22 00:00:08,983 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 12201 transitions. Word has length 136 [2023-12-22 00:00:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:08,983 INFO L495 AbstractCegarLoop]: Abstraction has 9768 states and 12201 transitions. [2023-12-22 00:00:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 12201 transitions. [2023-12-22 00:00:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 00:00:08,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:08,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:09,012 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 (26)] Forceful destruction successful, exit code 0 [2023-12-22 00:00:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:09,191 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:09,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1650054282, now seen corresponding path program 2 times [2023-12-22 00:00:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3710322] [2023-12-22 00:00:09,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:00:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:09,194 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:09,221 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 (27)] Waiting until timeout for monitored process [2023-12-22 00:00:09,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:00:09,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:00:09,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 00:00:09,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-22 00:00:10,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:00:10,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:10,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3710322] [2023-12-22 00:00:10,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3710322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:00:10,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:00:10,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 00:00:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203684757] [2023-12-22 00:00:10,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:00:10,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 00:00:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 00:00:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:10,062 INFO L87 Difference]: Start difference. First operand 9768 states and 12201 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:10,459 INFO L93 Difference]: Finished difference Result 10435 states and 13051 transitions. [2023-12-22 00:00:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 00:00:10,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-22 00:00:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:10,472 INFO L225 Difference]: With dead ends: 10435 [2023-12-22 00:00:10,472 INFO L226 Difference]: Without dead ends: 10044 [2023-12-22 00:00:10,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:00:10,476 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 2969 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:10,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 3121 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:00:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2023-12-22 00:00:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 9966. [2023-12-22 00:00:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9966 states, 9964 states have (on average 1.246487354476114) internal successors, (12420), 9965 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9966 states to 9966 states and 12420 transitions. [2023-12-22 00:00:10,778 INFO L78 Accepts]: Start accepts. Automaton has 9966 states and 12420 transitions. Word has length 136 [2023-12-22 00:00:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:10,779 INFO L495 AbstractCegarLoop]: Abstraction has 9966 states and 12420 transitions. [2023-12-22 00:00:10,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 9966 states and 12420 transitions. [2023-12-22 00:00:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-22 00:00:10,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:10,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:10,827 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 (27)] Ended with exit code 0 [2023-12-22 00:00:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:11,025 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:11,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1368325291, now seen corresponding path program 1 times [2023-12-22 00:00:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206920066] [2023-12-22 00:00:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:00:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:11,027 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:11,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 00:00:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:00:11,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 00:00:11,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:00:12,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:00:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:00:13,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206920066] [2023-12-22 00:00:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206920066] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:00:13,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:00:13,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:00:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607756374] [2023-12-22 00:00:13,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:00:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:00:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:00:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:00:13,873 INFO L87 Difference]: Start difference. First operand 9966 states and 12420 transitions. Second operand has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:32,936 INFO L93 Difference]: Finished difference Result 11677 states and 14441 transitions. [2023-12-22 00:00:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-22 00:00:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-22 00:00:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:32,948 INFO L225 Difference]: With dead ends: 11677 [2023-12-22 00:00:32,948 INFO L226 Difference]: Without dead ends: 10463 [2023-12-22 00:00:32,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=3247, Invalid=20933, Unknown=0, NotChecked=0, Total=24180 [2023-12-22 00:00:32,954 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 22669 mSDsluCounter, 11168 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22669 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:32,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22669 Valid, 12802 Invalid, 2626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-22 00:00:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2023-12-22 00:00:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10206. [2023-12-22 00:00:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10206 states, 10204 states have (on average 1.2445119560956488) internal successors, (12699), 10205 states have internal predecessors, (12699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 12699 transitions. [2023-12-22 00:00:33,299 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 12699 transitions. Word has length 137 [2023-12-22 00:00:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:33,300 INFO L495 AbstractCegarLoop]: Abstraction has 10206 states and 12699 transitions. [2023-12-22 00:00:33,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 12699 transitions. [2023-12-22 00:00:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-22 00:00:33,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:33,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:33,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 00:00:33,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:33,506 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:33,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:33,506 INFO L85 PathProgramCache]: Analyzing trace with hash 896094799, now seen corresponding path program 1 times [2023-12-22 00:00:33,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:33,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263133872] [2023-12-22 00:00:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:00:33,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:33,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:33,508 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:33,508 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 (29)] Waiting until timeout for monitored process [2023-12-22 00:00:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:00:33,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-22 00:00:33,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 134 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-22 00:00:36,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:00:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 63 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:00:38,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263133872] [2023-12-22 00:00:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263133872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:00:38,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:00:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-22 00:00:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14975416] [2023-12-22 00:00:38,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:00:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-22 00:00:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-22 00:00:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-22 00:00:38,745 INFO L87 Difference]: Start difference. First operand 10206 states and 12699 transitions. Second operand has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:02:43,650 INFO L93 Difference]: Finished difference Result 15683 states and 19068 transitions. [2023-12-22 00:02:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-22 00:02:43,653 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-22 00:02:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:02:43,673 INFO L225 Difference]: With dead ends: 15683 [2023-12-22 00:02:43,673 INFO L226 Difference]: Without dead ends: 13155 [2023-12-22 00:02:43,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47300 ImplicationChecksByTransitivity, 111.2s TimeCoverageRelationStatistics Valid=12461, Invalid=99429, Unknown=0, NotChecked=0, Total=111890 [2023-12-22 00:02:43,689 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 24549 mSDsluCounter, 22259 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24549 SdHoareTripleChecker+Valid, 23895 SdHoareTripleChecker+Invalid, 4055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-22 00:02:43,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24549 Valid, 23895 Invalid, 4055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [206 Valid, 3849 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-22 00:02:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13155 states. [2023-12-22 00:02:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13155 to 11295. [2023-12-22 00:02:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11295 states, 11293 states have (on average 1.2366067475427256) internal successors, (13965), 11294 states have internal predecessors, (13965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 13965 transitions. [2023-12-22 00:02:44,269 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 13965 transitions. Word has length 137 [2023-12-22 00:02:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:02:44,270 INFO L495 AbstractCegarLoop]: Abstraction has 11295 states and 13965 transitions. [2023-12-22 00:02:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 13965 transitions. [2023-12-22 00:02:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 00:02:44,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:02:44,274 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:02:44,284 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 (29)] Forceful destruction successful, exit code 0 [2023-12-22 00:02:44,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:44,479 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:02:44,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:02:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash 118988258, now seen corresponding path program 1 times [2023-12-22 00:02:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:02:44,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855827761] [2023-12-22 00:02:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:02:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:02:44,482 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:02:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 00:02:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:02:44,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-22 00:02:44,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:02:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 131 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-22 00:02:47,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:02:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 131 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-22 00:02:49,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:02:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855827761] [2023-12-22 00:02:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855827761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:02:49,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:02:49,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:02:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855664911] [2023-12-22 00:02:49,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:02:49,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:02:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:02:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:02:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:02:49,294 INFO L87 Difference]: Start difference. First operand 11295 states and 13965 transitions. Second operand has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:03:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:03:39,900 INFO L93 Difference]: Finished difference Result 15920 states and 19379 transitions. [2023-12-22 00:03:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-22 00:03:39,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-22 00:03:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:03:39,917 INFO L225 Difference]: With dead ends: 15920 [2023-12-22 00:03:39,918 INFO L226 Difference]: Without dead ends: 14639 [2023-12-22 00:03:39,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14589 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=5810, Invalid=31246, Unknown=0, NotChecked=0, Total=37056 [2023-12-22 00:03:39,925 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 22167 mSDsluCounter, 18812 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22167 SdHoareTripleChecker+Valid, 20430 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:03:39,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22167 Valid, 20430 Invalid, 2603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-22 00:03:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14639 states. [2023-12-22 00:03:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14639 to 13271. [2023-12-22 00:03:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13271 states, 13269 states have (on average 1.2256387067601175) internal successors, (16263), 13270 states have internal predecessors, (16263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:03:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 16263 transitions. [2023-12-22 00:03:40,616 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 16263 transitions. Word has length 138 [2023-12-22 00:03:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:03:40,616 INFO L495 AbstractCegarLoop]: Abstraction has 13271 states and 16263 transitions. [2023-12-22 00:03:40,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:03:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 16263 transitions. [2023-12-22 00:03:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 00:03:40,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:03:40,619 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:03:40,627 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 00:03:40,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:03:40,824 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:03:40,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:03:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 364006568, now seen corresponding path program 1 times [2023-12-22 00:03:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:03:40,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875242397] [2023-12-22 00:03:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:03:40,825 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 [2023-12-22 00:03:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:03:40,826 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:03:40,854 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 (31)] Waiting until timeout for monitored process [2023-12-22 00:03:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:03:40,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-22 00:03:40,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:03:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 133 proven. 61 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:03:43,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:03:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 133 proven. 61 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:03:44,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:03:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875242397] [2023-12-22 00:03:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875242397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:03:44,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:03:44,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:03:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986482447] [2023-12-22 00:03:44,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:03:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:03:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:03:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:03:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:03:44,949 INFO L87 Difference]: Start difference. First operand 13271 states and 16263 transitions. Second operand has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:06,684 INFO L93 Difference]: Finished difference Result 18747 states and 22740 transitions. [2023-12-22 00:05:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-22 00:05:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-22 00:05:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:06,709 INFO L225 Difference]: With dead ends: 18747 [2023-12-22 00:05:06,710 INFO L226 Difference]: Without dead ends: 16426 [2023-12-22 00:05:06,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19475 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=7234, Invalid=42272, Unknown=0, NotChecked=0, Total=49506 [2023-12-22 00:05:06,719 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 22730 mSDsluCounter, 13873 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22730 SdHoareTripleChecker+Valid, 15479 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:06,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22730 Valid, 15479 Invalid, 2018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-22 00:05:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16426 states. [2023-12-22 00:05:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16426 to 14448. [2023-12-22 00:05:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14448 states, 14446 states have (on average 1.222206839263464) internal successors, (17656), 14447 states have internal predecessors, (17656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14448 states to 14448 states and 17656 transitions. [2023-12-22 00:05:07,636 INFO L78 Accepts]: Start accepts. Automaton has 14448 states and 17656 transitions. Word has length 138 [2023-12-22 00:05:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:07,636 INFO L495 AbstractCegarLoop]: Abstraction has 14448 states and 17656 transitions. [2023-12-22 00:05:07,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14448 states and 17656 transitions. [2023-12-22 00:05:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-22 00:05:07,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:07,640 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:05:07,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-22 00:05:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:07,846 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:07,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash -498141540, now seen corresponding path program 1 times [2023-12-22 00:05:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166865413] [2023-12-22 00:05:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:07,848 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:07,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 00:05:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:07,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:05:07,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 15 proven. 191 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:05:08,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 15 proven. 191 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:05:08,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166865413] [2023-12-22 00:05:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166865413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:08,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:08,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-22 00:05:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435802144] [2023-12-22 00:05:08,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 00:05:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 00:05:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 00:05:08,695 INFO L87 Difference]: Start difference. First operand 14448 states and 17656 transitions. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:10,845 INFO L93 Difference]: Finished difference Result 38704 states and 47427 transitions. [2023-12-22 00:05:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 00:05:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-22 00:05:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:10,889 INFO L225 Difference]: With dead ends: 38704 [2023-12-22 00:05:10,889 INFO L226 Difference]: Without dead ends: 31384 [2023-12-22 00:05:10,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-22 00:05:10,899 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3196 mSDsluCounter, 4830 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:10,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 6394 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 00:05:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31384 states. [2023-12-22 00:05:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31384 to 31288. [2023-12-22 00:05:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31288 states, 31286 states have (on average 1.161222271942722) internal successors, (36330), 31287 states have internal predecessors, (36330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31288 states to 31288 states and 36330 transitions. [2023-12-22 00:05:12,954 INFO L78 Accepts]: Start accepts. Automaton has 31288 states and 36330 transitions. Word has length 140 [2023-12-22 00:05:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:12,956 INFO L495 AbstractCegarLoop]: Abstraction has 31288 states and 36330 transitions. [2023-12-22 00:05:12,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 31288 states and 36330 transitions. [2023-12-22 00:05:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-22 00:05:12,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:12,963 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:05:12,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-22 00:05:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:13,171 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1164590971, now seen corresponding path program 1 times [2023-12-22 00:05:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872583314] [2023-12-22 00:05:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:13,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:13,173 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:13,174 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 (33)] Waiting until timeout for monitored process [2023-12-22 00:05:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:13,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 00:05:13,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:15,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:16,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872583314] [2023-12-22 00:05:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872583314] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:16,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:16,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:05:16,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708332788] [2023-12-22 00:05:16,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:05:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:16,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:05:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:05:16,392 INFO L87 Difference]: Start difference. First operand 31288 states and 36330 transitions. Second operand has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:21,725 INFO L93 Difference]: Finished difference Result 43172 states and 50019 transitions. [2023-12-22 00:05:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 00:05:21,726 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-22 00:05:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:21,769 INFO L225 Difference]: With dead ends: 43172 [2023-12-22 00:05:21,770 INFO L226 Difference]: Without dead ends: 26566 [2023-12-22 00:05:21,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=914, Invalid=5248, Unknown=0, NotChecked=0, Total=6162 [2023-12-22 00:05:21,787 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 26614 mSDsluCounter, 11902 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26614 SdHoareTripleChecker+Valid, 13448 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:21,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26614 Valid, 13448 Invalid, 1856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 00:05:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26566 states. [2023-12-22 00:05:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26566 to 22577. [2023-12-22 00:05:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22577 states, 22575 states have (on average 1.166423034330011) internal successors, (26332), 22576 states have internal predecessors, (26332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22577 states to 22577 states and 26332 transitions. [2023-12-22 00:05:23,006 INFO L78 Accepts]: Start accepts. Automaton has 22577 states and 26332 transitions. Word has length 141 [2023-12-22 00:05:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:23,006 INFO L495 AbstractCegarLoop]: Abstraction has 22577 states and 26332 transitions. [2023-12-22 00:05:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22577 states and 26332 transitions. [2023-12-22 00:05:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-22 00:05:23,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:23,009 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:05:23,013 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 (33)] Ended with exit code 0 [2023-12-22 00:05:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:23,213 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:23,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -880558885, now seen corresponding path program 1 times [2023-12-22 00:05:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377033779] [2023-12-22 00:05:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:23,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:23,215 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:23,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-22 00:05:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:23,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 00:05:23,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:25,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:26,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:26,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377033779] [2023-12-22 00:05:26,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377033779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:26,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:05:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053010662] [2023-12-22 00:05:26,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:26,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:05:26,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:05:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:05:26,452 INFO L87 Difference]: Start difference. First operand 22577 states and 26332 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:35,872 INFO L93 Difference]: Finished difference Result 25691 states and 29829 transitions. [2023-12-22 00:05:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-22 00:05:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-22 00:05:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:35,895 INFO L225 Difference]: With dead ends: 25691 [2023-12-22 00:05:35,896 INFO L226 Difference]: Without dead ends: 15844 [2023-12-22 00:05:35,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=884, Invalid=4816, Unknown=0, NotChecked=0, Total=5700 [2023-12-22 00:05:35,910 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 19328 mSDsluCounter, 10555 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19328 SdHoareTripleChecker+Valid, 12098 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:35,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19328 Valid, 12098 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-22 00:05:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15844 states. [2023-12-22 00:05:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15844 to 12015. [2023-12-22 00:05:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12015 states, 12013 states have (on average 1.1960376259052692) internal successors, (14368), 12014 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12015 states to 12015 states and 14368 transitions. [2023-12-22 00:05:36,826 INFO L78 Accepts]: Start accepts. Automaton has 12015 states and 14368 transitions. Word has length 141 [2023-12-22 00:05:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:36,826 INFO L495 AbstractCegarLoop]: Abstraction has 12015 states and 14368 transitions. [2023-12-22 00:05:36,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12015 states and 14368 transitions. [2023-12-22 00:05:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:05:36,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:36,830 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:05:36,836 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 (34)] Forceful destruction successful, exit code 0 [2023-12-22 00:05:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:37,034 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:37,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash 111399106, now seen corresponding path program 1 times [2023-12-22 00:05:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:37,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351078990] [2023-12-22 00:05:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:37,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:37,037 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:37,038 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 (35)] Waiting until timeout for monitored process [2023-12-22 00:05:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:37,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-22 00:05:37,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-22 00:05:41,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-22 00:05:44,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351078990] [2023-12-22 00:05:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351078990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:44,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2023-12-22 00:05:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712971302] [2023-12-22 00:05:44,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-22 00:05:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-22 00:05:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2023-12-22 00:05:44,542 INFO L87 Difference]: Start difference. First operand 12015 states and 14368 transitions. Second operand has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:07:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:07:22,969 INFO L93 Difference]: Finished difference Result 16500 states and 19187 transitions. [2023-12-22 00:07:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-22 00:07:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-22 00:07:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:07:22,986 INFO L225 Difference]: With dead ends: 16500 [2023-12-22 00:07:22,986 INFO L226 Difference]: Without dead ends: 12663 [2023-12-22 00:07:22,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11310 ImplicationChecksByTransitivity, 80.2s TimeCoverageRelationStatistics Valid=4356, Invalid=28586, Unknown=0, NotChecked=0, Total=32942 [2023-12-22 00:07:22,992 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 21242 mSDsluCounter, 28894 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21242 SdHoareTripleChecker+Valid, 30478 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:07:22,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21242 Valid, 30478 Invalid, 3570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-22 00:07:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12663 states. [2023-12-22 00:07:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12663 to 11323. [2023-12-22 00:07:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11323 states, 11321 states have (on average 1.202720607720166) internal successors, (13616), 11322 states have internal predecessors, (13616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:07:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11323 states to 11323 states and 13616 transitions. [2023-12-22 00:07:23,465 INFO L78 Accepts]: Start accepts. Automaton has 11323 states and 13616 transitions. Word has length 142 [2023-12-22 00:07:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:07:23,465 INFO L495 AbstractCegarLoop]: Abstraction has 11323 states and 13616 transitions. [2023-12-22 00:07:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:07:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 11323 states and 13616 transitions. [2023-12-22 00:07:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:07:23,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:07:23,467 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:07:23,479 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 (35)] Forceful destruction successful, exit code 0 [2023-12-22 00:07:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:07:23,671 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:07:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:07:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash 770185986, now seen corresponding path program 1 times [2023-12-22 00:07:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:07:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95975770] [2023-12-22 00:07:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:07:23,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:07:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:07:23,673 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:07:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 00:07:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:07:23,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-22 00:07:23,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:07:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 142 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:07:26,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:07:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 66 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:07:29,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:07:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95975770] [2023-12-22 00:07:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95975770] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:07:29,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:07:29,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-22 00:07:29,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888245093] [2023-12-22 00:07:29,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:07:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-22 00:07:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:07:29,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-22 00:07:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 00:07:29,396 INFO L87 Difference]: Start difference. First operand 11323 states and 13616 transitions. Second operand has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:08:23,460 INFO L93 Difference]: Finished difference Result 14347 states and 16877 transitions. [2023-12-22 00:08:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-22 00:08:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-22 00:08:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:08:23,479 INFO L225 Difference]: With dead ends: 14347 [2023-12-22 00:08:23,479 INFO L226 Difference]: Without dead ends: 13359 [2023-12-22 00:08:23,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16376 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=4958, Invalid=41914, Unknown=0, NotChecked=0, Total=46872 [2023-12-22 00:08:23,486 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 31396 mSDsluCounter, 24631 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31396 SdHoareTripleChecker+Valid, 26225 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-22 00:08:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31396 Valid, 26225 Invalid, 3139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 2961 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-22 00:08:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2023-12-22 00:08:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 11778. [2023-12-22 00:08:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 11776 states have (on average 1.1981997282608696) internal successors, (14110), 11777 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 14110 transitions. [2023-12-22 00:08:24,223 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 14110 transitions. Word has length 142 [2023-12-22 00:08:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:08:24,223 INFO L495 AbstractCegarLoop]: Abstraction has 11778 states and 14110 transitions. [2023-12-22 00:08:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 14110 transitions. [2023-12-22 00:08:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:08:24,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:08:24,226 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:08:24,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-22 00:08:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:24,434 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:08:24,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:08:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1498539832, now seen corresponding path program 1 times [2023-12-22 00:08:24,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:08:24,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81011614] [2023-12-22 00:08:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:08:24,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:08:24,436 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:08:24,441 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 (37)] Waiting until timeout for monitored process [2023-12-22 00:08:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:08:24,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:08:24,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:08:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 142 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:08:26,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:08:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 139 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:08:26,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:08:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81011614] [2023-12-22 00:08:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81011614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:08:26,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:08:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-22 00:08:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248654576] [2023-12-22 00:08:26,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:08:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-22 00:08:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:08:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-22 00:08:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-22 00:08:26,717 INFO L87 Difference]: Start difference. First operand 11778 states and 14110 transitions. Second operand has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:08:29,090 INFO L93 Difference]: Finished difference Result 12116 states and 14482 transitions. [2023-12-22 00:08:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-22 00:08:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-22 00:08:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:08:29,101 INFO L225 Difference]: With dead ends: 12116 [2023-12-22 00:08:29,101 INFO L226 Difference]: Without dead ends: 10015 [2023-12-22 00:08:29,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2023-12-22 00:08:29,106 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 16298 mSDsluCounter, 6475 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16298 SdHoareTripleChecker+Valid, 7998 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:08:29,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16298 Valid, 7998 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 00:08:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10015 states. [2023-12-22 00:08:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 9283. [2023-12-22 00:08:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 9281 states have (on average 1.2256222389828682) internal successors, (11375), 9282 states have internal predecessors, (11375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 11375 transitions. [2023-12-22 00:08:29,470 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 11375 transitions. Word has length 142 [2023-12-22 00:08:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:08:29,470 INFO L495 AbstractCegarLoop]: Abstraction has 9283 states and 11375 transitions. [2023-12-22 00:08:29,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:29,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 11375 transitions. [2023-12-22 00:08:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:08:29,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:08:29,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:08:29,476 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 (37)] Ended with exit code 0 [2023-12-22 00:08:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:29,676 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:08:29,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:08:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2108753950, now seen corresponding path program 1 times [2023-12-22 00:08:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:08:29,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5245072] [2023-12-22 00:08:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:08:29,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:29,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:08:29,678 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:08:29,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 00:08:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:08:29,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 00:08:29,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:08:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 71 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:08:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:08:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:08:35,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:08:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5245072] [2023-12-22 00:08:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5245072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:08:35,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:08:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-22 00:08:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099070608] [2023-12-22 00:08:35,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:08:35,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:08:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:08:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:08:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:08:35,571 INFO L87 Difference]: Start difference. First operand 9283 states and 11375 transitions. Second operand has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:04,572 INFO L93 Difference]: Finished difference Result 9918 states and 12039 transitions. [2023-12-22 00:09:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-22 00:09:04,574 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-22 00:09:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:04,581 INFO L225 Difference]: With dead ends: 9918 [2023-12-22 00:09:04,581 INFO L226 Difference]: Without dead ends: 8043 [2023-12-22 00:09:04,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6817 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2606, Invalid=19744, Unknown=0, NotChecked=0, Total=22350 [2023-12-22 00:09:04,584 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 24240 mSDsluCounter, 16864 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24240 SdHoareTripleChecker+Valid, 18424 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:04,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24240 Valid, 18424 Invalid, 2789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-22 00:09:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2023-12-22 00:09:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 7438. [2023-12-22 00:09:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7438 states, 7436 states have (on average 1.263179128563744) internal successors, (9393), 7437 states have internal predecessors, (9393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 9393 transitions. [2023-12-22 00:09:04,730 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 9393 transitions. Word has length 142 [2023-12-22 00:09:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:04,730 INFO L495 AbstractCegarLoop]: Abstraction has 7438 states and 9393 transitions. [2023-12-22 00:09:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 9393 transitions. [2023-12-22 00:09:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-22 00:09:04,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:04,731 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:04,740 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 00:09:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:04,935 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:04,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -554436891, now seen corresponding path program 2 times [2023-12-22 00:09:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202874472] [2023-12-22 00:09:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:09:04,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:04,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:04,939 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:09:04,940 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 (39)] Waiting until timeout for monitored process [2023-12-22 00:09:05,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 00:09:05,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:09:05,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-22 00:09:05,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 56 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:07,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:09:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 32 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:12,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202874472] [2023-12-22 00:09:12,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202874472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:09:12,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:09:12,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2023-12-22 00:09:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692041138] [2023-12-22 00:09:12,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:09:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-22 00:09:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-22 00:09:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2023-12-22 00:09:12,190 INFO L87 Difference]: Start difference. First operand 7438 states and 9393 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:27,928 INFO L93 Difference]: Finished difference Result 7975 states and 9965 transitions. [2023-12-22 00:09:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-22 00:09:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-22 00:09:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:27,936 INFO L225 Difference]: With dead ends: 7975 [2023-12-22 00:09:27,936 INFO L226 Difference]: Without dead ends: 7555 [2023-12-22 00:09:27,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=2162, Invalid=9610, Unknown=0, NotChecked=0, Total=11772 [2023-12-22 00:09:27,939 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 22783 mSDsluCounter, 18602 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22783 SdHoareTripleChecker+Valid, 20110 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:27,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22783 Valid, 20110 Invalid, 1829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 00:09:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7555 states. [2023-12-22 00:09:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7555 to 7243. [2023-12-22 00:09:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7243 states, 7241 states have (on average 1.2680568982184781) internal successors, (9182), 7242 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7243 states to 7243 states and 9182 transitions. [2023-12-22 00:09:28,068 INFO L78 Accepts]: Start accepts. Automaton has 7243 states and 9182 transitions. Word has length 143 [2023-12-22 00:09:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:28,068 INFO L495 AbstractCegarLoop]: Abstraction has 7243 states and 9182 transitions. [2023-12-22 00:09:28,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7243 states and 9182 transitions. [2023-12-22 00:09:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-22 00:09:28,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:28,069 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:28,075 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 (39)] Forceful destruction successful, exit code 0 [2023-12-22 00:09:28,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:28,275 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:28,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash -404073406, now seen corresponding path program 1 times [2023-12-22 00:09:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:28,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303982811] [2023-12-22 00:09:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:09:28,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:28,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:28,278 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:09:28,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 00:09:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:09:28,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 00:09:28,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 153 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:09:29,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:09:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:09:30,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303982811] [2023-12-22 00:09:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303982811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:09:30,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:09:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-22 00:09:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305525852] [2023-12-22 00:09:30,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:09:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-22 00:09:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-22 00:09:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-22 00:09:30,485 INFO L87 Difference]: Start difference. First operand 7243 states and 9182 transitions. Second operand has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:31,838 INFO L93 Difference]: Finished difference Result 7247 states and 9184 transitions. [2023-12-22 00:09:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 00:09:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-22 00:09:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:31,845 INFO L225 Difference]: With dead ends: 7247 [2023-12-22 00:09:31,846 INFO L226 Difference]: Without dead ends: 7097 [2023-12-22 00:09:31,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2023-12-22 00:09:31,847 INFO L413 NwaCegarLoop]: 1489 mSDtfsCounter, 7323 mSDsluCounter, 7590 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7323 SdHoareTripleChecker+Valid, 9079 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:31,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7323 Valid, 9079 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 00:09:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2023-12-22 00:09:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 7095. [2023-12-22 00:09:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7093 states have (on average 1.2716763005780347) internal successors, (9020), 7094 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9020 transitions. [2023-12-22 00:09:31,955 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9020 transitions. Word has length 144 [2023-12-22 00:09:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:31,955 INFO L495 AbstractCegarLoop]: Abstraction has 7095 states and 9020 transitions. [2023-12-22 00:09:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9020 transitions. [2023-12-22 00:09:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 00:09:31,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:31,956 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:31,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-22 00:09:32,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:32,159 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:32,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1395065019, now seen corresponding path program 1 times [2023-12-22 00:09:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:32,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133692473] [2023-12-22 00:09:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:09:32,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:32,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:32,161 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:09:32,163 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 (41)] Waiting until timeout for monitored process [2023-12-22 00:09:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:09:32,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-22 00:09:32,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-22 00:09:35,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:09:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-22 00:09:37,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:37,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133692473] [2023-12-22 00:09:37,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133692473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:09:37,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:09:37,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-22 00:09:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123822916] [2023-12-22 00:09:37,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:09:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-22 00:09:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-22 00:09:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-22 00:09:37,694 INFO L87 Difference]: Start difference. First operand 7095 states and 9020 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:40,644 INFO L93 Difference]: Finished difference Result 7095 states and 9020 transitions. [2023-12-22 00:09:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-22 00:09:40,646 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-22 00:09:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:40,652 INFO L225 Difference]: With dead ends: 7095 [2023-12-22 00:09:40,653 INFO L226 Difference]: Without dead ends: 6763 [2023-12-22 00:09:40,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=482, Invalid=1968, Unknown=0, NotChecked=0, Total=2450 [2023-12-22 00:09:40,655 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 4397 mSDsluCounter, 16015 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 17475 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:40,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4397 Valid, 17475 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 00:09:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2023-12-22 00:09:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2023-12-22 00:09:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.2832002366163857) internal successors, (8677), 6762 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8677 transitions. [2023-12-22 00:09:40,732 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8677 transitions. Word has length 147 [2023-12-22 00:09:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:40,732 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 8677 transitions. [2023-12-22 00:09:40,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8677 transitions. [2023-12-22 00:09:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 00:09:40,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:40,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:40,742 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 (41)] Forceful destruction successful, exit code 0 [2023-12-22 00:09:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:40,937 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:40,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1315457718, now seen corresponding path program 1 times [2023-12-22 00:09:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976701026] [2023-12-22 00:09:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:09:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:40,940 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:09:40,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 00:09:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:09:41,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 00:09:41,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:41,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:09:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:42,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976701026] [2023-12-22 00:09:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976701026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:09:42,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:09:42,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 00:09:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521501195] [2023-12-22 00:09:42,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:09:42,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 00:09:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 00:09:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 00:09:42,434 INFO L87 Difference]: Start difference. First operand 6763 states and 8677 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 00:11:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 00:11:11,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 00:11:11,152 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 4973 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10011 mSolverCounterSat, 2497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4973 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 12508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2497 IncrementalHoareTripleChecker+Valid, 10011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:11:11,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4973 Valid, 200 Invalid, 12508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2497 Valid, 10011 Invalid, 0 Unknown, 0 Unchecked, 88.1s Time] [2023-12-22 00:11:11,153 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-22 00:11:11,158 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 (42)] Ended with exit code 0 [2023-12-22 00:11:11,185 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 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:11:11,185 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 [2023-12-22 00:11:11,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:11:11,355 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (6763states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17314 states constructed, input type IntersectNwa). [2023-12-22 00:11:11,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-22 00:11:11,358 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:11:11,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 00:11:11,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:11:11 BoogieIcfgContainer [2023-12-22 00:11:11,361 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 00:11:11,361 INFO L158 Benchmark]: Toolchain (without parser) took 869541.07ms. Allocated memory was 176.2MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 112.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-22 00:11:11,361 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 00:11:11,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1431.07ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 112.3MB in the beginning and 176.5MB in the end (delta: -64.2MB). Peak memory consumption was 156.0MB. Max. memory is 8.0GB. [2023-12-22 00:11:11,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 172.80ms. Allocated memory is still 260.0MB. Free memory was 176.5MB in the beginning and 141.3MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-22 00:11:11,361 INFO L158 Benchmark]: Boogie Preprocessor took 373.65ms. Allocated memory was 260.0MB in the beginning and 461.4MB in the end (delta: 201.3MB). Free memory was 141.3MB in the beginning and 376.2MB in the end (delta: -234.9MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-22 00:11:11,361 INFO L158 Benchmark]: RCFGBuilder took 24662.56ms. Allocated memory was 461.4MB in the beginning and 685.8MB in the end (delta: 224.4MB). Free memory was 376.2MB in the beginning and 495.0MB in the end (delta: -118.8MB). Peak memory consumption was 186.4MB. Max. memory is 8.0GB. [2023-12-22 00:11:11,362 INFO L158 Benchmark]: TraceAbstraction took 842892.53ms. Allocated memory was 685.8MB in the beginning and 1.7GB in the end (delta: 1.0GB). Free memory was 494.5MB in the beginning and 1.2GB in the end (delta: -754.0MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-22 00:11:11,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1431.07ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 112.3MB in the beginning and 176.5MB in the end (delta: -64.2MB). Peak memory consumption was 156.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 172.80ms. Allocated memory is still 260.0MB. Free memory was 176.5MB in the beginning and 141.3MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 373.65ms. Allocated memory was 260.0MB in the beginning and 461.4MB in the end (delta: 201.3MB). Free memory was 141.3MB in the beginning and 376.2MB in the end (delta: -234.9MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * RCFGBuilder took 24662.56ms. Allocated memory was 461.4MB in the beginning and 685.8MB in the end (delta: 224.4MB). Free memory was 376.2MB in the beginning and 495.0MB in the end (delta: -118.8MB). Peak memory consumption was 186.4MB. Max. memory is 8.0GB. * TraceAbstraction took 842892.53ms. Allocated memory was 685.8MB in the beginning and 1.7GB in the end (delta: 1.0GB). Free memory was 494.5MB in the beginning and 1.2GB in the end (delta: -754.0MB). Peak memory consumption was 1.1GB. 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: 331]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 331). Cancelled while NwaCegarLoop was constructing difference of abstraction (6763states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17314 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was constructing difference of abstraction (6763states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17314 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 842.8s, OverallIterations: 41, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 744.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 354077 SdHoareTripleChecker+Valid, 308.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354077 mSDsluCounter, 404674 SdHoareTripleChecker+Invalid, 266.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346749 mSDsCounter, 5537 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55327 IncrementalHoareTripleChecker+Invalid, 60864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5537 mSolverCounterUnsat, 57925 mSDtfsCounter, 55327 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8259 GetRequests, 6002 SyntacticMatches, 1 SemanticMatches, 2256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134011 ImplicationChecksByTransitivity, 445.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31288occurred in iteration=31, InterpolantAutomatonStates: 1797, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.6s AutomataMinimizationTime, 40 MinimizatonAttempts, 21811 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 75.1s InterpolantComputationTime, 3875 NumberOfCodeBlocks, 3599 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6643 ConstructedInterpolants, 1449 QuantifiedInterpolants, 93231 SizeOfPredicates, 213 NumberOfNonLiveVariables, 8028 ConjunctsInSsa, 459 ConjunctsInUnsatCore, 65 InterpolantComputations, 17 PerfectInterpolantSequences, 4345/8298 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