/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:38:14,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:38:14,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:38:14,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:38:14,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:38:14,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:38:14,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:38:14,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:38:14,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:38:14,495 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:38:14,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:38:14,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:38:14,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:38:14,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:38:14,497 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:38:14,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:38:14,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:38:14,497 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:38:14,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:38:14,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:38:14,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:38:14,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:38:14,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:38:14,508 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:38:14,509 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:38:14,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:38:14,509 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:38:14,509 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:38:14,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:38:14,510 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:38:14,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:38:14,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:38:14,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:38:14,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:38:14,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:38:14,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:38:14,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:38:14,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:38:14,516 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:38:14,516 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:38:14,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:38:14,517 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:38:14,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:38:14,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:38:14,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:38:14,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:38:14,753 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:38:14,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-25 07:38:15,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:38:15,951 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:38:15,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-25 07:38:15,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c829e32e/96bc99f6dd8c429bb8acb4d34f7d1772/FLAGf3f47f42a [2023-12-25 07:38:15,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c829e32e/96bc99f6dd8c429bb8acb4d34f7d1772 [2023-12-25 07:38:15,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:38:15,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:38:15,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:38:15,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:38:15,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:38:15,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:38:15" (1/1) ... [2023-12-25 07:38:15,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c357ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:15, skipping insertion in model container [2023-12-25 07:38:15,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:38:15" (1/1) ... [2023-12-25 07:38:16,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:38:16,245 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-12-25 07:38:16,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:38:16,262 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:38:16,327 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-12-25 07:38:16,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:38:16,347 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:38:16,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16 WrapperNode [2023-12-25 07:38:16,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:38:16,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:38:16,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:38:16,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:38:16,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,383 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 420 [2023-12-25 07:38:16,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:38:16,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:38:16,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:38:16,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:38:16,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,411 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 07:38:16,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:38:16,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:38:16,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:38:16,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:38:16,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (1/1) ... [2023-12-25 07:38:16,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:38:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:38:16,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 07:38:16,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 07:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:38:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:38:16,567 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:38:16,570 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:38:17,075 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:38:17,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:38:17,111 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:38:17,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:38:17 BoogieIcfgContainer [2023-12-25 07:38:17,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:38:17,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:38:17,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:38:17,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:38:17,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:38:15" (1/3) ... [2023-12-25 07:38:17,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07532a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:38:17, skipping insertion in model container [2023-12-25 07:38:17,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:38:16" (2/3) ... [2023-12-25 07:38:17,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07532a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:38:17, skipping insertion in model container [2023-12-25 07:38:17,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:38:17" (3/3) ... [2023-12-25 07:38:17,119 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-25 07:38:17,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:38:17,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:38:17,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:38:17,166 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;@599cadc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:38:17,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:38:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 07:38:17,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:17,179 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] [2023-12-25 07:38:17,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:17,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2061566520, now seen corresponding path program 1 times [2023-12-25 07:38:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639936927] [2023-12-25 07:38:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:17,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:17,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:17,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:17,221 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 (2)] Waiting until timeout for monitored process [2023-12-25 07:38:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:17,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:38:17,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:17,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:17,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:17,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639936927] [2023-12-25 07:38:17,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639936927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:17,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:38:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389720546] [2023-12-25 07:38:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:38:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:38:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:17,443 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2023-12-25 07:38:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:17,541 INFO L93 Difference]: Finished difference Result 188 states and 323 transitions. [2023-12-25 07:38:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:38:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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 [2023-12-25 07:38:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:17,550 INFO L225 Difference]: With dead ends: 188 [2023-12-25 07:38:17,550 INFO L226 Difference]: Without dead ends: 113 [2023-12-25 07:38:17,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:17,556 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:17,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 544 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:38:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-25 07:38:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-25 07:38:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 112 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 157 transitions. [2023-12-25 07:38:17,584 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 157 transitions. Word has length 34 [2023-12-25 07:38:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:17,584 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 157 transitions. [2023-12-25 07:38:17,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2023-12-25 07:38:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 157 transitions. [2023-12-25 07:38:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:38:17,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:17,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:17,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 07:38:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:17,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash 142441090, now seen corresponding path program 1 times [2023-12-25 07:38:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635023727] [2023-12-25 07:38:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:17,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:17,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:17,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:17,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 07:38:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:17,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:17,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:17,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:17,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:17,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635023727] [2023-12-25 07:38:17,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635023727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:17,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:17,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923618858] [2023-12-25 07:38:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:17,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:17,994 INFO L87 Difference]: Start difference. First operand 113 states and 157 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:18,013 INFO L93 Difference]: Finished difference Result 241 states and 367 transitions. [2023-12-25 07:38:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 07:38:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:18,015 INFO L225 Difference]: With dead ends: 241 [2023-12-25 07:38:18,015 INFO L226 Difference]: Without dead ends: 173 [2023-12-25 07:38:18,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:18,016 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:18,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-25 07:38:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2023-12-25 07:38:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.488235294117647) internal successors, (253), 170 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2023-12-25 07:38:18,025 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 74 [2023-12-25 07:38:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2023-12-25 07:38:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2023-12-25 07:38:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:38:18,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:18,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:18,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:18,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:18,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:18,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:18,233 INFO L85 PathProgramCache]: Analyzing trace with hash 55665313, now seen corresponding path program 1 times [2023-12-25 07:38:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771765721] [2023-12-25 07:38:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:18,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:18,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:18,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 07:38:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:18,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:18,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:18,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:18,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771765721] [2023-12-25 07:38:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771765721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:18,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320922261] [2023-12-25 07:38:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:18,396 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:18,418 INFO L93 Difference]: Finished difference Result 407 states and 641 transitions. [2023-12-25 07:38:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:18,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 07:38:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:18,421 INFO L225 Difference]: With dead ends: 407 [2023-12-25 07:38:18,421 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 07:38:18,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:18,423 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 92 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:18,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 07:38:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2023-12-25 07:38:18,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.5467625899280575) internal successors, (430), 278 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 430 transitions. [2023-12-25 07:38:18,445 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 430 transitions. Word has length 74 [2023-12-25 07:38:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:18,445 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 430 transitions. [2023-12-25 07:38:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 430 transitions. [2023-12-25 07:38:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:38:18,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:18,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:18,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:18,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:18,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -379309504, now seen corresponding path program 1 times [2023-12-25 07:38:18,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033656520] [2023-12-25 07:38:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:18,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:18,675 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 (5)] Waiting until timeout for monitored process [2023-12-25 07:38:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:18,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:18,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:18,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:18,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033656520] [2023-12-25 07:38:18,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033656520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:18,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:18,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147281777] [2023-12-25 07:38:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:18,788 INFO L87 Difference]: Start difference. First operand 279 states and 430 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:18,805 INFO L93 Difference]: Finished difference Result 715 states and 1144 transitions. [2023-12-25 07:38:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 07:38:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:18,808 INFO L225 Difference]: With dead ends: 715 [2023-12-25 07:38:18,808 INFO L226 Difference]: Without dead ends: 481 [2023-12-25 07:38:18,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:18,810 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 80 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:18,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-25 07:38:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2023-12-25 07:38:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5774058577405858) internal successors, (754), 478 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 754 transitions. [2023-12-25 07:38:18,838 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 754 transitions. Word has length 74 [2023-12-25 07:38:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:18,839 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 754 transitions. [2023-12-25 07:38:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 754 transitions. [2023-12-25 07:38:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:38:18,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:18,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:18,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:19,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:19,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash 7485535, now seen corresponding path program 1 times [2023-12-25 07:38:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:19,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385850781] [2023-12-25 07:38:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:19,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:19,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:19,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 07:38:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:19,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:38:19,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:19,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:19,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385850781] [2023-12-25 07:38:19,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385850781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:19,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:19,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:38:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190818657] [2023-12-25 07:38:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:38:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:38:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:38:19,970 INFO L87 Difference]: Start difference. First operand 479 states and 754 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:20,126 INFO L93 Difference]: Finished difference Result 3517 states and 5717 transitions. [2023-12-25 07:38:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:38:20,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 07:38:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:20,139 INFO L225 Difference]: With dead ends: 3517 [2023-12-25 07:38:20,139 INFO L226 Difference]: Without dead ends: 3083 [2023-12-25 07:38:20,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:38:20,145 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 943 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:20,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1069 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:38:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2023-12-25 07:38:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 911. [2023-12-25 07:38:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.589010989010989) internal successors, (1446), 910 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1446 transitions. [2023-12-25 07:38:20,184 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1446 transitions. Word has length 74 [2023-12-25 07:38:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:20,185 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1446 transitions. [2023-12-25 07:38:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1446 transitions. [2023-12-25 07:38:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 07:38:20,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:20,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:20,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:20,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:20,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash 218992084, now seen corresponding path program 1 times [2023-12-25 07:38:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:20,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422911137] [2023-12-25 07:38:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:20,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:20,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:20,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 07:38:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:20,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:38:20,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:20,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:20,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422911137] [2023-12-25 07:38:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422911137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:20,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:20,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:38:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254540405] [2023-12-25 07:38:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:38:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:38:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:20,506 INFO L87 Difference]: Start difference. First operand 911 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:20,534 INFO L93 Difference]: Finished difference Result 961 states and 1511 transitions. [2023-12-25 07:38:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:38:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-25 07:38:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:20,538 INFO L225 Difference]: With dead ends: 961 [2023-12-25 07:38:20,538 INFO L226 Difference]: Without dead ends: 959 [2023-12-25 07:38:20,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:38:20,543 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:20,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 452 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-25 07:38:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 943. [2023-12-25 07:38:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 1.5690021231422506) internal successors, (1478), 942 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1478 transitions. [2023-12-25 07:38:20,570 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1478 transitions. Word has length 75 [2023-12-25 07:38:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:20,570 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1478 transitions. [2023-12-25 07:38:20,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1478 transitions. [2023-12-25 07:38:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:38:20,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:20,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:20,575 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 [2023-12-25 07:38:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:20,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1800178137, now seen corresponding path program 1 times [2023-12-25 07:38:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898762626] [2023-12-25 07:38:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:20,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:20,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:20,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:20,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 07:38:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:20,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:20,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:20,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:20,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898762626] [2023-12-25 07:38:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898762626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029163169] [2023-12-25 07:38:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:20,922 INFO L87 Difference]: Start difference. First operand 943 states and 1478 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:20,947 INFO L93 Difference]: Finished difference Result 2627 states and 4152 transitions. [2023-12-25 07:38:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:20,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-25 07:38:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:20,952 INFO L225 Difference]: With dead ends: 2627 [2023-12-25 07:38:20,952 INFO L226 Difference]: Without dead ends: 1729 [2023-12-25 07:38:20,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:20,954 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:20,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 262 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2023-12-25 07:38:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1727. [2023-12-25 07:38:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.5654692931633836) internal successors, (2702), 1726 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2702 transitions. [2023-12-25 07:38:20,985 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2702 transitions. Word has length 76 [2023-12-25 07:38:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:20,985 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2702 transitions. [2023-12-25 07:38:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2702 transitions. [2023-12-25 07:38:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:38:20,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:20,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:20,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:21,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:21,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash -358513117, now seen corresponding path program 1 times [2023-12-25 07:38:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576952067] [2023-12-25 07:38:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:21,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:21,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:21,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:21,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 07:38:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:21,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:21,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:21,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:21,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576952067] [2023-12-25 07:38:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576952067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:21,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:21,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888308103] [2023-12-25 07:38:21,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:21,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:21,301 INFO L87 Difference]: Start difference. First operand 1727 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:21,334 INFO L93 Difference]: Finished difference Result 3413 states and 5379 transitions. [2023-12-25 07:38:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-25 07:38:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:21,341 INFO L225 Difference]: With dead ends: 3413 [2023-12-25 07:38:21,341 INFO L226 Difference]: Without dead ends: 2515 [2023-12-25 07:38:21,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:21,342 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 100 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:21,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 356 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-12-25 07:38:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2023-12-25 07:38:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 1.5636942675159236) internal successors, (3928), 2512 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3928 transitions. [2023-12-25 07:38:21,383 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3928 transitions. Word has length 76 [2023-12-25 07:38:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:21,383 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 3928 transitions. [2023-12-25 07:38:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3928 transitions. [2023-12-25 07:38:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:38:21,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:21,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:21,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:21,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:21,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -478728773, now seen corresponding path program 1 times [2023-12-25 07:38:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:21,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273837344] [2023-12-25 07:38:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:21,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:21,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:21,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 07:38:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:21,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:21,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:21,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:21,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273837344] [2023-12-25 07:38:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273837344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282031983] [2023-12-25 07:38:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:21,693 INFO L87 Difference]: Start difference. First operand 2513 states and 3928 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:21,743 INFO L93 Difference]: Finished difference Result 7061 states and 11018 transitions. [2023-12-25 07:38:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-25 07:38:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:21,755 INFO L225 Difference]: With dead ends: 7061 [2023-12-25 07:38:21,755 INFO L226 Difference]: Without dead ends: 4595 [2023-12-25 07:38:21,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:21,762 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:21,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 335 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2023-12-25 07:38:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4593. [2023-12-25 07:38:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 4592 states have (on average 1.543554006968641) internal successors, (7088), 4592 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 7088 transitions. [2023-12-25 07:38:21,894 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 7088 transitions. Word has length 77 [2023-12-25 07:38:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:21,894 INFO L495 AbstractCegarLoop]: Abstraction has 4593 states and 7088 transitions. [2023-12-25 07:38:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 7088 transitions. [2023-12-25 07:38:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:38:21,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:21,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:21,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:22,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:22,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:22,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -661055781, now seen corresponding path program 1 times [2023-12-25 07:38:22,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:22,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801432286] [2023-12-25 07:38:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:22,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:22,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:22,100 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:22,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 07:38:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:22,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:22,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:22,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:22,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:22,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801432286] [2023-12-25 07:38:22,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801432286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:22,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:22,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:22,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741133601] [2023-12-25 07:38:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:22,188 INFO L87 Difference]: Start difference. First operand 4593 states and 7088 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:22,264 INFO L93 Difference]: Finished difference Result 12917 states and 19826 transitions. [2023-12-25 07:38:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:22,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-25 07:38:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:22,285 INFO L225 Difference]: With dead ends: 12917 [2023-12-25 07:38:22,285 INFO L226 Difference]: Without dead ends: 8371 [2023-12-25 07:38:22,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:22,291 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 88 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:22,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2023-12-25 07:38:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8369. [2023-12-25 07:38:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 8368 states have (on average 1.5162523900573615) internal successors, (12688), 8368 states have internal predecessors, (12688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12688 transitions. [2023-12-25 07:38:22,473 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12688 transitions. Word has length 77 [2023-12-25 07:38:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:22,474 INFO L495 AbstractCegarLoop]: Abstraction has 8369 states and 12688 transitions. [2023-12-25 07:38:22,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12688 transitions. [2023-12-25 07:38:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-25 07:38:22,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:22,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:22,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:22,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:22,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:22,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash -925108354, now seen corresponding path program 1 times [2023-12-25 07:38:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991996392] [2023-12-25 07:38:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:22,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:22,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:22,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 07:38:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:22,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:22,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:23,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:23,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991996392] [2023-12-25 07:38:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991996392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:23,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022197393] [2023-12-25 07:38:23,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:23,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:23,685 INFO L87 Difference]: Start difference. First operand 8369 states and 12688 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:24,457 INFO L93 Difference]: Finished difference Result 26999 states and 40467 transitions. [2023-12-25 07:38:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 07:38:24,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 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 106 [2023-12-25 07:38:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:24,494 INFO L225 Difference]: With dead ends: 26999 [2023-12-25 07:38:24,494 INFO L226 Difference]: Without dead ends: 21301 [2023-12-25 07:38:24,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-12-25 07:38:24,507 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 822 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:24,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 816 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:38:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21301 states. [2023-12-25 07:38:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21301 to 17425. [2023-12-25 07:38:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17425 states, 17424 states have (on average 1.5068870523415978) internal successors, (26256), 17424 states have internal predecessors, (26256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 26256 transitions. [2023-12-25 07:38:24,954 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 26256 transitions. Word has length 106 [2023-12-25 07:38:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:24,954 INFO L495 AbstractCegarLoop]: Abstraction has 17425 states and 26256 transitions. [2023-12-25 07:38:24,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 26256 transitions. [2023-12-25 07:38:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:24,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:24,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:24,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:25,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:25,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:25,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash 367375973, now seen corresponding path program 1 times [2023-12-25 07:38:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766673911] [2023-12-25 07:38:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:25,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:25,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 07:38:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:25,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:25,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:25,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:25,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766673911] [2023-12-25 07:38:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766673911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895792764] [2023-12-25 07:38:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:25,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:25,281 INFO L87 Difference]: Start difference. First operand 17425 states and 26256 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:25,491 INFO L93 Difference]: Finished difference Result 29281 states and 44267 transitions. [2023-12-25 07:38:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:25,511 INFO L225 Difference]: With dead ends: 29281 [2023-12-25 07:38:25,512 INFO L226 Difference]: Without dead ends: 11903 [2023-12-25 07:38:25,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:25,522 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 80 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:25,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 351 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11903 states. [2023-12-25 07:38:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11903 to 11891. [2023-12-25 07:38:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11891 states, 11890 states have (on average 1.5042052144659377) internal successors, (17885), 11890 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11891 states to 11891 states and 17885 transitions. [2023-12-25 07:38:25,765 INFO L78 Accepts]: Start accepts. Automaton has 11891 states and 17885 transitions. Word has length 107 [2023-12-25 07:38:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:25,765 INFO L495 AbstractCegarLoop]: Abstraction has 11891 states and 17885 transitions. [2023-12-25 07:38:25,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11891 states and 17885 transitions. [2023-12-25 07:38:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:25,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:25,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:25,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:25,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:25,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash -696754536, now seen corresponding path program 1 times [2023-12-25 07:38:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806465220] [2023-12-25 07:38:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:25,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:25,973 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:25,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 07:38:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:26,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:26,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:26,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:26,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806465220] [2023-12-25 07:38:26,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806465220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:26,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:26,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117185073] [2023-12-25 07:38:26,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:26,085 INFO L87 Difference]: Start difference. First operand 11891 states and 17885 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:26,346 INFO L93 Difference]: Finished difference Result 35288 states and 53002 transitions. [2023-12-25 07:38:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:26,379 INFO L225 Difference]: With dead ends: 35288 [2023-12-25 07:38:26,379 INFO L226 Difference]: Without dead ends: 23478 [2023-12-25 07:38:26,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:26,395 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 79 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:26,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 300 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23478 states. [2023-12-25 07:38:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23478 to 23476. [2023-12-25 07:38:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23476 states, 23475 states have (on average 1.4889030883919063) internal successors, (34952), 23475 states have internal predecessors, (34952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23476 states to 23476 states and 34952 transitions. [2023-12-25 07:38:26,813 INFO L78 Accepts]: Start accepts. Automaton has 23476 states and 34952 transitions. Word has length 107 [2023-12-25 07:38:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:26,813 INFO L495 AbstractCegarLoop]: Abstraction has 23476 states and 34952 transitions. [2023-12-25 07:38:26,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 23476 states and 34952 transitions. [2023-12-25 07:38:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:26,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:26,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:26,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:27,021 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:27,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash 578262566, now seen corresponding path program 1 times [2023-12-25 07:38:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826960403] [2023-12-25 07:38:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:27,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:27,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:27,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 07:38:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:27,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:38:27,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:27,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:28,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826960403] [2023-12-25 07:38:28,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826960403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:28,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:28,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:38:28,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406955151] [2023-12-25 07:38:28,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:28,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:28,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:28,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:28,012 INFO L87 Difference]: Start difference. First operand 23476 states and 34952 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 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) [2023-12-25 07:38:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:30,222 INFO L93 Difference]: Finished difference Result 85576 states and 126646 transitions. [2023-12-25 07:38:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 07:38:30,223 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 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 107 [2023-12-25 07:38:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:30,314 INFO L225 Difference]: With dead ends: 85576 [2023-12-25 07:38:30,314 INFO L226 Difference]: Without dead ends: 62206 [2023-12-25 07:38:30,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 07:38:30,339 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1063 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:30,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1968 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 07:38:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62206 states. [2023-12-25 07:38:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62206 to 53652. [2023-12-25 07:38:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53652 states, 53651 states have (on average 1.478704963560791) internal successors, (79334), 53651 states have internal predecessors, (79334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53652 states to 53652 states and 79334 transitions. [2023-12-25 07:38:31,632 INFO L78 Accepts]: Start accepts. Automaton has 53652 states and 79334 transitions. Word has length 107 [2023-12-25 07:38:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:31,632 INFO L495 AbstractCegarLoop]: Abstraction has 53652 states and 79334 transitions. [2023-12-25 07:38:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 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) [2023-12-25 07:38:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 53652 states and 79334 transitions. [2023-12-25 07:38:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:31,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:31,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:31,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:31,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:31,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:31,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash 373231493, now seen corresponding path program 1 times [2023-12-25 07:38:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:31,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076034315] [2023-12-25 07:38:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:31,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:31,857 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:31,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 07:38:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:31,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:31,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:32,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:32,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:32,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076034315] [2023-12-25 07:38:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076034315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:32,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653019347] [2023-12-25 07:38:32,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:32,755 INFO L87 Difference]: Start difference. First operand 53652 states and 79334 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:34,701 INFO L93 Difference]: Finished difference Result 155818 states and 229969 transitions. [2023-12-25 07:38:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 07:38:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:34,863 INFO L225 Difference]: With dead ends: 155818 [2023-12-25 07:38:34,863 INFO L226 Difference]: Without dead ends: 125416 [2023-12-25 07:38:34,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:38:34,910 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2018 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 944 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:38:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125416 states. [2023-12-25 07:38:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125416 to 107124. [2023-12-25 07:38:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107124 states, 107123 states have (on average 1.4776845308663873) internal successors, (158294), 107123 states have internal predecessors, (158294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107124 states to 107124 states and 158294 transitions. [2023-12-25 07:38:37,944 INFO L78 Accepts]: Start accepts. Automaton has 107124 states and 158294 transitions. Word has length 107 [2023-12-25 07:38:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:37,944 INFO L495 AbstractCegarLoop]: Abstraction has 107124 states and 158294 transitions. [2023-12-25 07:38:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 107124 states and 158294 transitions. [2023-12-25 07:38:37,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:37,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:37,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:37,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:38,159 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1413911580, now seen corresponding path program 1 times [2023-12-25 07:38:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346253906] [2023-12-25 07:38:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:38,160 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 [2023-12-25 07:38:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:38,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:38,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 07:38:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:38,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:38,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:38,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:38,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346253906] [2023-12-25 07:38:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346253906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:38,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:38,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:38,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109573470] [2023-12-25 07:38:38,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:38,412 INFO L87 Difference]: Start difference. First operand 107124 states and 158294 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:39,398 INFO L93 Difference]: Finished difference Result 161080 states and 238016 transitions. [2023-12-25 07:38:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:39,460 INFO L225 Difference]: With dead ends: 161080 [2023-12-25 07:38:39,460 INFO L226 Difference]: Without dead ends: 54070 [2023-12-25 07:38:39,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:39,514 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 73 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 332 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54070 states. [2023-12-25 07:38:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54070 to 54068. [2023-12-25 07:38:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54068 states, 54067 states have (on average 1.4636284609835943) internal successors, (79134), 54067 states have internal predecessors, (79134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54068 states to 54068 states and 79134 transitions. [2023-12-25 07:38:40,815 INFO L78 Accepts]: Start accepts. Automaton has 54068 states and 79134 transitions. Word has length 107 [2023-12-25 07:38:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:40,815 INFO L495 AbstractCegarLoop]: Abstraction has 54068 states and 79134 transitions. [2023-12-25 07:38:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 54068 states and 79134 transitions. [2023-12-25 07:38:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:40,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:40,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:40,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-25 07:38:41,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:41,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -494930602, now seen corresponding path program 1 times [2023-12-25 07:38:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070194761] [2023-12-25 07:38:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:41,025 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:41,029 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 (18)] Waiting until timeout for monitored process [2023-12-25 07:38:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:41,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:38:41,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:41,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:41,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070194761] [2023-12-25 07:38:41,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070194761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:41,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:38:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205463189] [2023-12-25 07:38:41,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:41,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:41,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:41,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:41,965 INFO L87 Difference]: Start difference. First operand 54068 states and 79134 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 15 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:44,847 INFO L93 Difference]: Finished difference Result 245170 states and 359775 transitions. [2023-12-25 07:38:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:38:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 15 states have internal predecessors, (194), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:45,108 INFO L225 Difference]: With dead ends: 245170 [2023-12-25 07:38:45,109 INFO L226 Difference]: Without dead ends: 191216 [2023-12-25 07:38:45,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:38:45,164 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1673 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:45,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 845 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:38:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191216 states. [2023-12-25 07:38:48,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191216 to 125972. [2023-12-25 07:38:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125972 states, 125971 states have (on average 1.4578275952401742) internal successors, (183644), 125971 states have internal predecessors, (183644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125972 states to 125972 states and 183644 transitions. [2023-12-25 07:38:48,740 INFO L78 Accepts]: Start accepts. Automaton has 125972 states and 183644 transitions. Word has length 107 [2023-12-25 07:38:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:48,741 INFO L495 AbstractCegarLoop]: Abstraction has 125972 states and 183644 transitions. [2023-12-25 07:38:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 15 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 125972 states and 183644 transitions. [2023-12-25 07:38:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 07:38:48,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:48,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:48,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 07:38:48,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:48,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:48,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:48,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1893902027, now seen corresponding path program 1 times [2023-12-25 07:38:48,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:48,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322237546] [2023-12-25 07:38:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:48,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:48,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:48,954 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:48,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 07:38:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:49,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:49,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:49,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:49,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322237546] [2023-12-25 07:38:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322237546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:49,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:49,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737852287] [2023-12-25 07:38:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:49,054 INFO L87 Difference]: Start difference. First operand 125972 states and 183644 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:50,391 INFO L93 Difference]: Finished difference Result 196944 states and 286894 transitions. [2023-12-25 07:38:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:50,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-25 07:38:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:50,479 INFO L225 Difference]: With dead ends: 196944 [2023-12-25 07:38:50,479 INFO L226 Difference]: Without dead ends: 71142 [2023-12-25 07:38:50,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:50,532 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 67 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:50,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 313 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71142 states. [2023-12-25 07:38:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71142 to 71140. [2023-12-25 07:38:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71140 states, 71139 states have (on average 1.4384795962833326) internal successors, (102332), 71139 states have internal predecessors, (102332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71140 states to 71140 states and 102332 transitions. [2023-12-25 07:38:52,480 INFO L78 Accepts]: Start accepts. Automaton has 71140 states and 102332 transitions. Word has length 107 [2023-12-25 07:38:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:52,481 INFO L495 AbstractCegarLoop]: Abstraction has 71140 states and 102332 transitions. [2023-12-25 07:38:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 71140 states and 102332 transitions. [2023-12-25 07:38:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 07:38:52,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:52,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:52,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-25 07:38:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:52,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:52,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash -67686303, now seen corresponding path program 1 times [2023-12-25 07:38:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024243958] [2023-12-25 07:38:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:52,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:52,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:52,688 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:52,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 07:38:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:52,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:38:52,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:52,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:38:52,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024243958] [2023-12-25 07:38:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024243958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:38:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:38:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:38:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143293041] [2023-12-25 07:38:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:38:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:38:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:38:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:52,788 INFO L87 Difference]: Start difference. First operand 71140 states and 102332 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:38:54,864 INFO L93 Difference]: Finished difference Result 211188 states and 302734 transitions. [2023-12-25 07:38:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:38:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-25 07:38:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:38:55,030 INFO L225 Difference]: With dead ends: 211188 [2023-12-25 07:38:55,030 INFO L226 Difference]: Without dead ends: 140218 [2023-12-25 07:38:55,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:38:55,066 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 76 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:38:55,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 312 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:38:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140218 states. [2023-12-25 07:38:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140218 to 140216. [2023-12-25 07:38:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140216 states, 140215 states have (on average 1.4205327532717613) internal successors, (199180), 140215 states have internal predecessors, (199180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140216 states to 140216 states and 199180 transitions. [2023-12-25 07:38:58,397 INFO L78 Accepts]: Start accepts. Automaton has 140216 states and 199180 transitions. Word has length 108 [2023-12-25 07:38:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:38:58,398 INFO L495 AbstractCegarLoop]: Abstraction has 140216 states and 199180 transitions. [2023-12-25 07:38:58,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:38:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 140216 states and 199180 transitions. [2023-12-25 07:38:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 07:38:58,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:38:58,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:38:58,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-25 07:38:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:58,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:38:58,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:38:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1327512079, now seen corresponding path program 1 times [2023-12-25 07:38:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:38:58,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944953579] [2023-12-25 07:38:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:38:58,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:38:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:38:58,614 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:38:58,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 07:38:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:38:58,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:38:58,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:38:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:59,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:38:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:38:59,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:38:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944953579] [2023-12-25 07:38:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944953579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:38:59,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:38:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:38:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389670732] [2023-12-25 07:38:59,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:38:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:38:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:38:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:38:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:38:59,877 INFO L87 Difference]: Start difference. First operand 140216 states and 199180 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:39:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:39:07,045 INFO L93 Difference]: Finished difference Result 518730 states and 734568 transitions. [2023-12-25 07:39:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 07:39:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 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 108 [2023-12-25 07:39:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:39:07,714 INFO L225 Difference]: With dead ends: 518730 [2023-12-25 07:39:07,714 INFO L226 Difference]: Without dead ends: 378674 [2023-12-25 07:39:07,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:39:07,801 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1409 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:39:07,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 2978 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 07:39:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378674 states. [2023-12-25 07:39:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378674 to 316648. [2023-12-25 07:39:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316648 states, 316647 states have (on average 1.4098286104084359) internal successors, (446418), 316647 states have internal predecessors, (446418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:39:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316648 states to 316648 states and 446418 transitions. [2023-12-25 07:39:16,615 INFO L78 Accepts]: Start accepts. Automaton has 316648 states and 446418 transitions. Word has length 108 [2023-12-25 07:39:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:39:16,615 INFO L495 AbstractCegarLoop]: Abstraction has 316648 states and 446418 transitions. [2023-12-25 07:39:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:39:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 316648 states and 446418 transitions. [2023-12-25 07:39:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 07:39:16,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:39:16,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:39:16,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 07:39:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:39:16,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:39:16,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:39:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1472739827, now seen corresponding path program 1 times [2023-12-25 07:39:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:39:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603613598] [2023-12-25 07:39:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:39:16,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:39:16,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:39:16,828 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:39:16,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 07:39:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:39:16,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:39:16,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:39:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:39:16,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:39:16,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:39:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603613598] [2023-12-25 07:39:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603613598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:39:16,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:39:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:39:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117025724] [2023-12-25 07:39:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:39:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:39:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:39:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:39:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:39:16,928 INFO L87 Difference]: Start difference. First operand 316648 states and 446418 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:39:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:39:20,532 INFO L93 Difference]: Finished difference Result 474232 states and 667942 transitions. [2023-12-25 07:39:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:39:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-25 07:39:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:39:20,752 INFO L225 Difference]: With dead ends: 474232 [2023-12-25 07:39:20,753 INFO L226 Difference]: Without dead ends: 157846 [2023-12-25 07:39:20,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:39:20,852 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 61 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:39:20,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 294 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:39:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157846 states.