/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:42:23,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:42:23,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 23:42:23,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:42:23,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:42:23,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:42:23,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:42:23,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:42:23,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:42:23,604 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:42:23,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:42:23,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:42:23,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:42:23,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:42:23,606 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:42:23,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:42:23,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:42:23,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:42:23,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:42:23,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:42:23,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:42:23,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:42:23,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:42:23,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:42:23,610 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:42:23,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:42:23,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:42:23,611 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:42:23,611 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:42:23,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:42:23,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:42:23,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:42:23,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:42:23,845 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:42:23,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-21 23:42:25,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:42:25,313 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:42:25,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-21 23:42:25,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34e14b81/58474267a2e241b0b061a2758f1b1cd7/FLAGd916ef797 [2023-12-21 23:42:25,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34e14b81/58474267a2e241b0b061a2758f1b1cd7 [2023-12-21 23:42:25,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:42:25,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:42:25,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:42:25,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:42:25,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:42:25,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:42:25" (1/1) ... [2023-12-21 23:42:25,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a63023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:25, skipping insertion in model container [2023-12-21 23:42:25,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:42:25" (1/1) ... [2023-12-21 23:42:25,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:42:25,701 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6354,6367] [2023-12-21 23:42:25,771 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13415,13428] [2023-12-21 23:42:26,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:42:26,483 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:42:26,514 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6354,6367] [2023-12-21 23:42:26,529 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13415,13428] [2023-12-21 23:42:26,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:42:26,932 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:42:26,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26 WrapperNode [2023-12-21 23:42:26,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:42:26,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:42:26,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:42:26,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:42:26,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:26,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,114 INFO L138 Inliner]: procedures = 34, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4961 [2023-12-21 23:42:27,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:42:27,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:42:27,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:42:27,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:42:27,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,206 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 23:42:27,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:42:27,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:42:27,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:42:27,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:42:27,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (1/1) ... [2023-12-21 23:42:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:42:27,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:42:27,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 23:42:27,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 23:42:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:42:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:42:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:42:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:42:27,550 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:42:27,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:42:52,878 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:42:52,936 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:42:52,937 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 23:42:52,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:42:52 BoogieIcfgContainer [2023-12-21 23:42:52,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:42:52,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:42:52,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:42:52,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:42:52,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:42:25" (1/3) ... [2023-12-21 23:42:52,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756222e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:42:52, skipping insertion in model container [2023-12-21 23:42:52,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:26" (2/3) ... [2023-12-21 23:42:52,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756222e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:42:52, skipping insertion in model container [2023-12-21 23:42:52,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:42:52" (3/3) ... [2023-12-21 23:42:52,943 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-21 23:42:52,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:42:52,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:42:53,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:42:53,015 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;@7e40c7e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:42:53,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:42:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:42:53,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:53,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:53,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:53,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1841440842, now seen corresponding path program 1 times [2023-12-21 23:42:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:53,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843272387] [2023-12-21 23:42:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:53,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:53,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:53,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 23:42:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:53,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 23:42:53,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:53,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:53,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843272387] [2023-12-21 23:42:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843272387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:53,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:42:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706182436] [2023-12-21 23:42:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:53,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 23:42:53,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 23:42:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:42:53,173 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:53,247 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-21 23:42:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 23:42:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 23:42:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:53,261 INFO L225 Difference]: With dead ends: 1594 [2023-12-21 23:42:53,261 INFO L226 Difference]: Without dead ends: 803 [2023-12-21 23:42:53,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:42:53,274 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:53,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-21 23:42:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-21 23:42:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-21 23:42:53,333 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-21 23:42:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-21 23:42:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-21 23:42:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:42:53,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:53,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:53,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:53,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:53,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1254634828, now seen corresponding path program 1 times [2023-12-21 23:42:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:53,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322366987] [2023-12-21 23:42:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:53,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:53,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:53,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 23:42:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:53,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:42:53,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:53,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:53,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:53,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322366987] [2023-12-21 23:42:53,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322366987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:53,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:53,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:42:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028156103] [2023-12-21 23:42:53,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:53,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:42:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:42:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:53,624 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:53,706 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-21 23:42:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:42:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 23:42:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:53,713 INFO L225 Difference]: With dead ends: 864 [2023-12-21 23:42:53,713 INFO L226 Difference]: Without dead ends: 832 [2023-12-21 23:42:53,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:53,715 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:53,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-21 23:42:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-21 23:42:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-21 23:42:53,745 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-21 23:42:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:53,745 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-21 23:42:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-21 23:42:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 23:42:53,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:53,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:53,751 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 (3)] Ended with exit code 0 [2023-12-21 23:42:53,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:53,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:53,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1671741616, now seen corresponding path program 1 times [2023-12-21 23:42:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:53,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947383562] [2023-12-21 23:42:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:53,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:53,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:53,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 23:42:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:54,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:42:54,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:54,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:54,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947383562] [2023-12-21 23:42:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947383562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:54,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:42:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255669983] [2023-12-21 23:42:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:42:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:42:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:42:54,249 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:54,369 INFO L93 Difference]: Finished difference Result 919 states and 1689 transitions. [2023-12-21 23:42:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:42:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 23:42:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:54,373 INFO L225 Difference]: With dead ends: 919 [2023-12-21 23:42:54,373 INFO L226 Difference]: Without dead ends: 890 [2023-12-21 23:42:54,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:42:54,375 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 3033 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:54,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 1656 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:42:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-21 23:42:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 857. [2023-12-21 23:42:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8619883040935672) internal successors, (1592), 856 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1592 transitions. [2023-12-21 23:42:54,389 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1592 transitions. Word has length 32 [2023-12-21 23:42:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:54,390 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1592 transitions. [2023-12-21 23:42:54,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1592 transitions. [2023-12-21 23:42:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 23:42:54,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:54,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:54,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:54,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:54,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -349537184, now seen corresponding path program 1 times [2023-12-21 23:42:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:54,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992476687] [2023-12-21 23:42:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:54,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:54,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 23:42:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:54,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:54,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:54,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:54,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:54,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992476687] [2023-12-21 23:42:54,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992476687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:54,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:54,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:54,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915754753] [2023-12-21 23:42:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:54,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:54,722 INFO L87 Difference]: Start difference. First operand 857 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:54,758 INFO L93 Difference]: Finished difference Result 1007 states and 1830 transitions. [2023-12-21 23:42:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 23:42:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:54,762 INFO L225 Difference]: With dead ends: 1007 [2023-12-21 23:42:54,762 INFO L226 Difference]: Without dead ends: 924 [2023-12-21 23:42:54,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:54,766 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:54,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1541 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-12-21 23:42:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 922. [2023-12-21 23:42:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8380434782608697) internal successors, (1691), 921 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1691 transitions. [2023-12-21 23:42:54,784 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1691 transitions. Word has length 34 [2023-12-21 23:42:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:54,784 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1691 transitions. [2023-12-21 23:42:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1691 transitions. [2023-12-21 23:42:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 23:42:54,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:54,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:54,799 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 [2023-12-21 23:42:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:54,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1987359035, now seen corresponding path program 1 times [2023-12-21 23:42:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334631879] [2023-12-21 23:42:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:54,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:54,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:54,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:54,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 23:42:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:55,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:42:55,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:55,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:55,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334631879] [2023-12-21 23:42:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334631879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:42:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096938447] [2023-12-21 23:42:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:42:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:42:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:55,137 INFO L87 Difference]: Start difference. First operand 922 states and 1691 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:55,183 INFO L93 Difference]: Finished difference Result 936 states and 1708 transitions. [2023-12-21 23:42:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:42:55,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 23:42:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:55,187 INFO L225 Difference]: With dead ends: 936 [2023-12-21 23:42:55,187 INFO L226 Difference]: Without dead ends: 934 [2023-12-21 23:42:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:55,187 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:55,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-12-21 23:42:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 930. [2023-12-21 23:42:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 928 states have (on average 1.8297413793103448) internal successors, (1698), 929 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1698 transitions. [2023-12-21 23:42:55,202 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1698 transitions. Word has length 35 [2023-12-21 23:42:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:55,202 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1698 transitions. [2023-12-21 23:42:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1698 transitions. [2023-12-21 23:42:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:55,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:55,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:55,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:55,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:55,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:55,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash 177158552, now seen corresponding path program 1 times [2023-12-21 23:42:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:55,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342329099] [2023-12-21 23:42:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:55,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:55,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:55,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 23:42:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:55,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:55,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:55,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:55,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342329099] [2023-12-21 23:42:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342329099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581818949] [2023-12-21 23:42:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:55,504 INFO L87 Difference]: Start difference. First operand 930 states and 1698 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:55,538 INFO L93 Difference]: Finished difference Result 1098 states and 1958 transitions. [2023-12-21 23:42:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:55,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:55,542 INFO L225 Difference]: With dead ends: 1098 [2023-12-21 23:42:55,543 INFO L226 Difference]: Without dead ends: 1009 [2023-12-21 23:42:55,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:55,544 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:55,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-21 23:42:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1007. [2023-12-21 23:42:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 1005 states have (on average 1.8049751243781094) internal successors, (1814), 1006 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1814 transitions. [2023-12-21 23:42:55,560 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1814 transitions. Word has length 36 [2023-12-21 23:42:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:55,561 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1814 transitions. [2023-12-21 23:42:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1814 transitions. [2023-12-21 23:42:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:55,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:55,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:55,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:55,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:55,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:55,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash -448497512, now seen corresponding path program 1 times [2023-12-21 23:42:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88257854] [2023-12-21 23:42:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:55,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:55,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:55,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 23:42:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:55,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:55,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:55,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:55,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88257854] [2023-12-21 23:42:55,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88257854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:55,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:55,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:55,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083811193] [2023-12-21 23:42:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:55,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:55,847 INFO L87 Difference]: Start difference. First operand 1007 states and 1814 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:55,877 INFO L93 Difference]: Finished difference Result 1433 states and 2457 transitions. [2023-12-21 23:42:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:55,881 INFO L225 Difference]: With dead ends: 1433 [2023-12-21 23:42:55,882 INFO L226 Difference]: Without dead ends: 1202 [2023-12-21 23:42:55,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:55,883 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:55,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-12-21 23:42:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1200. [2023-12-21 23:42:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1198 states have (on average 1.7479131886477461) internal successors, (2094), 1199 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 2094 transitions. [2023-12-21 23:42:55,901 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 2094 transitions. Word has length 36 [2023-12-21 23:42:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:55,901 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 2094 transitions. [2023-12-21 23:42:55,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 2094 transitions. [2023-12-21 23:42:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:55,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:55,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:55,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:56,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:56,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:56,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:56,106 INFO L85 PathProgramCache]: Analyzing trace with hash 440235928, now seen corresponding path program 1 times [2023-12-21 23:42:56,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:56,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398326611] [2023-12-21 23:42:56,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:56,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:56,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:56,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:56,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 23:42:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:56,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:56,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:56,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:56,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398326611] [2023-12-21 23:42:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398326611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:56,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047967638] [2023-12-21 23:42:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:56,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:56,186 INFO L87 Difference]: Start difference. First operand 1200 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:56,221 INFO L93 Difference]: Finished difference Result 1976 states and 3234 transitions. [2023-12-21 23:42:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:56,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:56,226 INFO L225 Difference]: With dead ends: 1976 [2023-12-21 23:42:56,226 INFO L226 Difference]: Without dead ends: 1552 [2023-12-21 23:42:56,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:56,227 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:56,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-12-21 23:42:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1550. [2023-12-21 23:42:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1548 states have (on average 1.6679586563307494) internal successors, (2582), 1549 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2582 transitions. [2023-12-21 23:42:56,253 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2582 transitions. Word has length 36 [2023-12-21 23:42:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:56,253 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2582 transitions. [2023-12-21 23:42:56,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2582 transitions. [2023-12-21 23:42:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:42:56,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:56,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:56,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:56,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:56,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1612908441, now seen corresponding path program 1 times [2023-12-21 23:42:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:56,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327395859] [2023-12-21 23:42:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:56,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:56,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:56,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 23:42:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:56,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:42:56,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:57,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:42:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:57,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327395859] [2023-12-21 23:42:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327395859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:42:57,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:42:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:42:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197587576] [2023-12-21 23:42:57,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:42:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:42:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:42:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:42:57,397 INFO L87 Difference]: Start difference. First operand 1550 states and 2582 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:58,859 INFO L93 Difference]: Finished difference Result 3268 states and 5027 transitions. [2023-12-21 23:42:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:42:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:42:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:58,867 INFO L225 Difference]: With dead ends: 3268 [2023-12-21 23:42:58,867 INFO L226 Difference]: Without dead ends: 2714 [2023-12-21 23:42:58,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-21 23:42:58,870 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 3325 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3325 SdHoareTripleChecker+Valid, 15027 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:58,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3325 Valid, 15027 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 23:42:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2023-12-21 23:42:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2322. [2023-12-21 23:42:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2320 states have (on average 1.5905172413793103) internal successors, (3690), 2321 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3690 transitions. [2023-12-21 23:42:58,918 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3690 transitions. Word has length 50 [2023-12-21 23:42:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:58,918 INFO L495 AbstractCegarLoop]: Abstraction has 2322 states and 3690 transitions. [2023-12-21 23:42:58,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3690 transitions. [2023-12-21 23:42:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:42:58,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:58,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:58,925 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 [2023-12-21 23:42:59,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:59,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2056402791, now seen corresponding path program 1 times [2023-12-21 23:42:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:59,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371890309] [2023-12-21 23:42:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:59,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:59,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:59,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 23:42:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:59,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:59,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:59,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:59,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:59,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371890309] [2023-12-21 23:42:59,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371890309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:59,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630725544] [2023-12-21 23:42:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:59,202 INFO L87 Difference]: Start difference. First operand 2322 states and 3690 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:59,241 INFO L93 Difference]: Finished difference Result 3444 states and 5327 transitions. [2023-12-21 23:42:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:42:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:59,246 INFO L225 Difference]: With dead ends: 3444 [2023-12-21 23:42:59,247 INFO L226 Difference]: Without dead ends: 1898 [2023-12-21 23:42:59,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:59,249 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 31 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:59,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-21 23:42:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1891. [2023-12-21 23:42:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.6236103758602436) internal successors, (3067), 1890 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3067 transitions. [2023-12-21 23:42:59,282 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3067 transitions. Word has length 50 [2023-12-21 23:42:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:59,282 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 3067 transitions. [2023-12-21 23:42:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3067 transitions. [2023-12-21 23:42:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 23:42:59,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:59,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:59,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:59,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1763012615, now seen corresponding path program 1 times [2023-12-21 23:42:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175638182] [2023-12-21 23:42:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:59,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:59,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:59,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 23:42:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:59,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:59,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:59,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:59,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175638182] [2023-12-21 23:42:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175638182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075278293] [2023-12-21 23:42:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:59,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:59,587 INFO L87 Difference]: Start difference. First operand 1891 states and 3067 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:59,615 INFO L93 Difference]: Finished difference Result 2447 states and 3867 transitions. [2023-12-21 23:42:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 23:42:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:59,619 INFO L225 Difference]: With dead ends: 2447 [2023-12-21 23:42:59,619 INFO L226 Difference]: Without dead ends: 1341 [2023-12-21 23:42:59,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:59,620 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 27 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:59,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3002 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-21 23:42:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2023-12-21 23:42:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1337 states have (on average 1.68810770381451) internal successors, (2257), 1338 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2257 transitions. [2023-12-21 23:42:59,641 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2257 transitions. Word has length 52 [2023-12-21 23:42:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:59,641 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2257 transitions. [2023-12-21 23:42:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2257 transitions. [2023-12-21 23:42:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 23:42:59,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:59,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:59,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:59,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1511501427, now seen corresponding path program 1 times [2023-12-21 23:42:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:59,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355957690] [2023-12-21 23:42:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:59,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:59,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:59,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 23:42:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:59,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:42:59,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:00,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:00,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:00,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355957690] [2023-12-21 23:43:00,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355957690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:00,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:00,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:43:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200864325] [2023-12-21 23:43:00,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:43:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:43:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:43:00,783 INFO L87 Difference]: Start difference. First operand 1339 states and 2257 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:01,972 INFO L93 Difference]: Finished difference Result 2871 states and 4397 transitions. [2023-12-21 23:43:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 23:43:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 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 53 [2023-12-21 23:43:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:01,979 INFO L225 Difference]: With dead ends: 2871 [2023-12-21 23:43:01,979 INFO L226 Difference]: Without dead ends: 2317 [2023-12-21 23:43:01,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-21 23:43:01,980 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 4732 mSDsluCounter, 12045 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 13572 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:01,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4732 Valid, 13572 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 23:43:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-12-21 23:43:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 1963. [2023-12-21 23:43:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1961 states have (on average 1.5823559408465069) internal successors, (3103), 1962 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 3103 transitions. [2023-12-21 23:43:02,033 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 3103 transitions. Word has length 53 [2023-12-21 23:43:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:02,033 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 3103 transitions. [2023-12-21 23:43:02,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 3103 transitions. [2023-12-21 23:43:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 23:43:02,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:02,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:02,039 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 [2023-12-21 23:43:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:02,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:02,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1136546311, now seen corresponding path program 1 times [2023-12-21 23:43:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040859110] [2023-12-21 23:43:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:02,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:02,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 23:43:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:02,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:02,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:02,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:02,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:02,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040859110] [2023-12-21 23:43:02,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040859110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:02,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:02,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197998670] [2023-12-21 23:43:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:02,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:02,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:02,371 INFO L87 Difference]: Start difference. First operand 1963 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:02,412 INFO L93 Difference]: Finished difference Result 2503 states and 3844 transitions. [2023-12-21 23:43:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:02,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 23:43:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:02,416 INFO L225 Difference]: With dead ends: 2503 [2023-12-21 23:43:02,417 INFO L226 Difference]: Without dead ends: 1325 [2023-12-21 23:43:02,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:02,420 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 23 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:02,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-12-21 23:43:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1323. [2023-12-21 23:43:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1321 states have (on average 1.6646479939439818) internal successors, (2199), 1322 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2199 transitions. [2023-12-21 23:43:02,444 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2199 transitions. Word has length 55 [2023-12-21 23:43:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:02,444 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 2199 transitions. [2023-12-21 23:43:02,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2199 transitions. [2023-12-21 23:43:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 23:43:02,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:02,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:02,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-21 23:43:02,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:02,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:02,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash -314781477, now seen corresponding path program 1 times [2023-12-21 23:43:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:02,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567028002] [2023-12-21 23:43:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:02,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:02,650 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 23:43:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:02,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:43:02,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:03,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:03,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567028002] [2023-12-21 23:43:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567028002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:03,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:03,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:43:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108119862] [2023-12-21 23:43:03,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:43:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:43:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:43:03,612 INFO L87 Difference]: Start difference. First operand 1323 states and 2199 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:04,554 INFO L93 Difference]: Finished difference Result 2361 states and 3578 transitions. [2023-12-21 23:43:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 23:43:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 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 56 [2023-12-21 23:43:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:04,559 INFO L225 Difference]: With dead ends: 2361 [2023-12-21 23:43:04,559 INFO L226 Difference]: Without dead ends: 1823 [2023-12-21 23:43:04,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 23:43:04,560 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 3206 mSDsluCounter, 11940 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 13449 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:04,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 13449 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:43:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2023-12-21 23:43:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1705. [2023-12-21 23:43:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1703 states have (on average 1.5783910745742806) internal successors, (2688), 1704 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2688 transitions. [2023-12-21 23:43:04,596 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2688 transitions. Word has length 56 [2023-12-21 23:43:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:04,597 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 2688 transitions. [2023-12-21 23:43:04,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2688 transitions. [2023-12-21 23:43:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 23:43:04,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:04,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:04,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:04,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:04,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:04,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728915, now seen corresponding path program 1 times [2023-12-21 23:43:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:04,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044390958] [2023-12-21 23:43:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:04,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:04,803 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:04,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 23:43:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:04,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:43:04,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:43:04,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:43:05,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:05,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044390958] [2023-12-21 23:43:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044390958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:05,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:05,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:43:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297306166] [2023-12-21 23:43:05,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:05,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:43:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:05,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:43:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:43:05,023 INFO L87 Difference]: Start difference. First operand 1705 states and 2688 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2023-12-21 23:43:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:05,112 INFO L93 Difference]: Finished difference Result 3525 states and 5026 transitions. [2023-12-21 23:43:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:43:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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 58 [2023-12-21 23:43:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:05,118 INFO L225 Difference]: With dead ends: 3525 [2023-12-21 23:43:05,118 INFO L226 Difference]: Without dead ends: 2605 [2023-12-21 23:43:05,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:43:05,119 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1480 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:05,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 3123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-12-21 23:43:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2509. [2023-12-21 23:43:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2507 states have (on average 1.4387714399680893) internal successors, (3607), 2508 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3607 transitions. [2023-12-21 23:43:05,243 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3607 transitions. Word has length 58 [2023-12-21 23:43:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:05,243 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3607 transitions. [2023-12-21 23:43:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2023-12-21 23:43:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3607 transitions. [2023-12-21 23:43:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 23:43:05,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:05,244 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] [2023-12-21 23:43:05,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:05,448 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:05,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1248748378, now seen corresponding path program 1 times [2023-12-21 23:43:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679779989] [2023-12-21 23:43:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:05,450 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:05,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 23:43:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:05,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:05,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:05,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:05,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:05,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679779989] [2023-12-21 23:43:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679779989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:05,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:05,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:43:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875163650] [2023-12-21 23:43:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:05,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:05,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:05,585 INFO L87 Difference]: Start difference. First operand 2509 states and 3607 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:39,400 INFO L93 Difference]: Finished difference Result 4013 states and 6480 transitions. [2023-12-21 23:43:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 23:43:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:39,409 INFO L225 Difference]: With dead ends: 4013 [2023-12-21 23:43:39,409 INFO L226 Difference]: Without dead ends: 3260 [2023-12-21 23:43:39,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:39,410 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 807 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:39,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 538 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2023-12-21 23:43:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2023-12-21 23:43:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3260. [2023-12-21 23:43:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.4076120319214243) internal successors, (4586), 3259 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4586 transitions. [2023-12-21 23:43:39,536 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4586 transitions. Word has length 60 [2023-12-21 23:43:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:39,536 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4586 transitions. [2023-12-21 23:43:39,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4586 transitions. [2023-12-21 23:43:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 23:43:39,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:39,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:39,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:39,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:39,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -622593213, now seen corresponding path program 1 times [2023-12-21 23:43:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847148762] [2023-12-21 23:43:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:39,745 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:39,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 23:43:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:39,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:39,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:40,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:41,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847148762] [2023-12-21 23:43:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847148762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:41,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:41,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:43:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22500560] [2023-12-21 23:43:41,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:41,239 INFO L87 Difference]: Start difference. First operand 3260 states and 4586 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:42,589 INFO L93 Difference]: Finished difference Result 4380 states and 6006 transitions. [2023-12-21 23:43:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 23:43:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 23:43:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:42,598 INFO L225 Difference]: With dead ends: 4380 [2023-12-21 23:43:42,598 INFO L226 Difference]: Without dead ends: 3294 [2023-12-21 23:43:42,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:43:42,600 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 16391 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16391 SdHoareTripleChecker+Valid, 7639 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:42,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16391 Valid, 7639 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:43:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2023-12-21 23:43:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3260. [2023-12-21 23:43:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.3977900552486189) internal successors, (4554), 3259 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4554 transitions. [2023-12-21 23:43:42,670 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4554 transitions. Word has length 91 [2023-12-21 23:43:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:42,670 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4554 transitions. [2023-12-21 23:43:42,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4554 transitions. [2023-12-21 23:43:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 23:43:42,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:42,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:42,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:42,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:42,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -340278905, now seen corresponding path program 1 times [2023-12-21 23:43:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412044609] [2023-12-21 23:43:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:42,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:42,877 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:42,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 23:43:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:42,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:42,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:43,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:44,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412044609] [2023-12-21 23:43:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412044609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:44,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:44,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:43:44,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145547508] [2023-12-21 23:43:44,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:44,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:44,424 INFO L87 Difference]: Start difference. First operand 3260 states and 4554 transitions. Second operand has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:46,179 INFO L93 Difference]: Finished difference Result 4090 states and 5590 transitions. [2023-12-21 23:43:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:43:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 23:43:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:46,185 INFO L225 Difference]: With dead ends: 4090 [2023-12-21 23:43:46,185 INFO L226 Difference]: Without dead ends: 3396 [2023-12-21 23:43:46,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 23:43:46,187 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 16380 mSDsluCounter, 7670 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16380 SdHoareTripleChecker+Valid, 9163 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:46,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16380 Valid, 9163 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 23:43:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2023-12-21 23:43:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3260. [2023-12-21 23:43:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.3928790669122162) internal successors, (4538), 3259 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4538 transitions. [2023-12-21 23:43:46,262 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4538 transitions. Word has length 92 [2023-12-21 23:43:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:46,263 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4538 transitions. [2023-12-21 23:43:46,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4538 transitions. [2023-12-21 23:43:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:43:46,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:46,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:46,268 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 [2023-12-21 23:43:46,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:46,468 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:46,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2103290029, now seen corresponding path program 1 times [2023-12-21 23:43:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:46,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052781425] [2023-12-21 23:43:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:46,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:46,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 23:43:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:46,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:43:46,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:47,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:48,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052781425] [2023-12-21 23:43:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052781425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:48,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:48,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:43:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840691504] [2023-12-21 23:43:48,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:48,462 INFO L87 Difference]: Start difference. First operand 3260 states and 4538 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:53,675 INFO L93 Difference]: Finished difference Result 4426 states and 5952 transitions. [2023-12-21 23:43:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 23:43:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:43:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:53,681 INFO L225 Difference]: With dead ends: 4426 [2023-12-21 23:43:53,681 INFO L226 Difference]: Without dead ends: 3708 [2023-12-21 23:43:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 23:43:53,683 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 3334 mSDsluCounter, 27613 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 29182 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 29182 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 23:43:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2023-12-21 23:43:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 2650. [2023-12-21 23:43:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2648 states have (on average 1.4354229607250755) internal successors, (3801), 2649 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3801 transitions. [2023-12-21 23:43:53,767 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3801 transitions. Word has length 93 [2023-12-21 23:43:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:53,767 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3801 transitions. [2023-12-21 23:43:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3801 transitions. [2023-12-21 23:43:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:43:53,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:53,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:53,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:53,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:53,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1748584457, now seen corresponding path program 1 times [2023-12-21 23:43:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220757015] [2023-12-21 23:43:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:53,972 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 [2023-12-21 23:43:53,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:53,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:53,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 23:43:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:54,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:43:54,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:55,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:55,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:55,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220757015] [2023-12-21 23:43:55,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220757015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:55,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:55,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:43:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434709409] [2023-12-21 23:43:55,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:55,573 INFO L87 Difference]: Start difference. First operand 2650 states and 3801 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:01,032 INFO L93 Difference]: Finished difference Result 3545 states and 4884 transitions. [2023-12-21 23:44:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 23:44:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:01,037 INFO L225 Difference]: With dead ends: 3545 [2023-12-21 23:44:01,037 INFO L226 Difference]: Without dead ends: 3263 [2023-12-21 23:44:01,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 23:44:01,039 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1895 mSDsluCounter, 26230 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 27808 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:01,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 27808 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 23:44:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2023-12-21 23:44:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2873. [2023-12-21 23:44:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.4158829676071056) internal successors, (4065), 2872 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4065 transitions. [2023-12-21 23:44:01,105 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4065 transitions. Word has length 93 [2023-12-21 23:44:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:01,105 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4065 transitions. [2023-12-21 23:44:01,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4065 transitions. [2023-12-21 23:44:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:01,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:01,106 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:01,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-21 23:44:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:01,310 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:01,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash 37297619, now seen corresponding path program 1 times [2023-12-21 23:44:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407376274] [2023-12-21 23:44:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:01,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:01,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:01,312 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 23:44:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:01,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:01,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:02,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:02,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:02,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407376274] [2023-12-21 23:44:02,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407376274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:02,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:02,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111647636] [2023-12-21 23:44:02,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:02,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:02,828 INFO L87 Difference]: Start difference. First operand 2873 states and 4065 transitions. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:08,316 INFO L93 Difference]: Finished difference Result 5414 states and 7078 transitions. [2023-12-21 23:44:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:44:08,317 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:08,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:08,323 INFO L225 Difference]: With dead ends: 5414 [2023-12-21 23:44:08,323 INFO L226 Difference]: Without dead ends: 5031 [2023-12-21 23:44:08,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 23:44:08,325 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1998 mSDsluCounter, 21859 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 23453 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:08,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 23453 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 23:44:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2023-12-21 23:44:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4083. [2023-12-21 23:44:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 4081 states have (on average 1.346483704974271) internal successors, (5495), 4082 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 5495 transitions. [2023-12-21 23:44:08,480 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 5495 transitions. Word has length 93 [2023-12-21 23:44:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:08,481 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 5495 transitions. [2023-12-21 23:44:08,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 5495 transitions. [2023-12-21 23:44:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 23:44:08,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:08,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:08,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:08,687 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:08,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1952999020, now seen corresponding path program 1 times [2023-12-21 23:44:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765773651] [2023-12-21 23:44:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:08,688 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 [2023-12-21 23:44:08,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:08,689 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:08,690 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 (23)] Waiting until timeout for monitored process [2023-12-21 23:44:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:08,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:44:08,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:08,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:08,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765773651] [2023-12-21 23:44:08,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765773651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:08,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:08,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:44:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51111757] [2023-12-21 23:44:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:08,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:44:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:44:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:08,855 INFO L87 Difference]: Start difference. First operand 4083 states and 5495 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:44,911 INFO L93 Difference]: Finished difference Result 7091 states and 10327 transitions. [2023-12-21 23:44:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:44:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-21 23:44:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:44,920 INFO L225 Difference]: With dead ends: 7091 [2023-12-21 23:44:44,920 INFO L226 Difference]: Without dead ends: 5587 [2023-12-21 23:44:44,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:44,922 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 986 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:44,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 413 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time] [2023-12-21 23:44:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-12-21 23:44:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2023-12-21 23:44:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.3372738670965432) internal successors, (7466), 5584 states have internal predecessors, (7466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 7466 transitions. [2023-12-21 23:44:45,088 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 7466 transitions. Word has length 128 [2023-12-21 23:44:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:45,088 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 7466 transitions. [2023-12-21 23:44:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 7466 transitions. [2023-12-21 23:44:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:44:45,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:45,091 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:45,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:45,296 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:45,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1257112613, now seen corresponding path program 2 times [2023-12-21 23:44:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:45,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177150294] [2023-12-21 23:44:45,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:44:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:45,298 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:45,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 23:44:45,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:44:45,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:44:45,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:44:45,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-21 23:44:45,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:45,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:45,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177150294] [2023-12-21 23:44:45,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177150294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:45,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:45,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:44:45,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092196566] [2023-12-21 23:44:45,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:45,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:44:45,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:44:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:45,886 INFO L87 Difference]: Start difference. First operand 5585 states and 7466 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:46,085 INFO L93 Difference]: Finished difference Result 6519 states and 8642 transitions. [2023-12-21 23:44:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:44:46,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 130 [2023-12-21 23:44:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:46,093 INFO L225 Difference]: With dead ends: 6519 [2023-12-21 23:44:46,093 INFO L226 Difference]: Without dead ends: 5711 [2023-12-21 23:44:46,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:46,095 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1528 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:46,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 3095 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:44:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2023-12-21 23:44:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5575. [2023-12-21 23:44:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 5573 states have (on average 1.3307015969854656) internal successors, (7416), 5574 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 7416 transitions. [2023-12-21 23:44:46,241 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 7416 transitions. Word has length 130 [2023-12-21 23:44:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:46,242 INFO L495 AbstractCegarLoop]: Abstraction has 5575 states and 7416 transitions. [2023-12-21 23:44:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 7416 transitions. [2023-12-21 23:44:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:44:46,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:46,246 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:46,248 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 (24)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:46,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:46,448 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:46,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -902407041, now seen corresponding path program 2 times [2023-12-21 23:44:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825304475] [2023-12-21 23:44:46,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:44:46,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:46,451 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:46,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 23:44:46,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:44:46,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:44:46,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:44:46,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-21 23:44:47,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:47,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825304475] [2023-12-21 23:44:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825304475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:44:47,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006199836] [2023-12-21 23:44:47,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:47,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:44:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:44:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:47,137 INFO L87 Difference]: Start difference. First operand 5575 states and 7416 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:47,330 INFO L93 Difference]: Finished difference Result 6144 states and 8152 transitions. [2023-12-21 23:44:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:44:47,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 130 [2023-12-21 23:44:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:47,336 INFO L225 Difference]: With dead ends: 6144 [2023-12-21 23:44:47,336 INFO L226 Difference]: Without dead ends: 5815 [2023-12-21 23:44:47,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:47,337 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1523 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:47,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 3120 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:44:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5815 states. [2023-12-21 23:44:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5815 to 5747. [2023-12-21 23:44:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5745 states have (on average 1.3241079199303742) internal successors, (7607), 5746 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 7607 transitions. [2023-12-21 23:44:47,502 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 7607 transitions. Word has length 130 [2023-12-21 23:44:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:47,502 INFO L495 AbstractCegarLoop]: Abstraction has 5747 states and 7607 transitions. [2023-12-21 23:44:47,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 7607 transitions. [2023-12-21 23:44:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:44:47,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:47,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:47,532 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 (25)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:47,729 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:47,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash 883475035, now seen corresponding path program 2 times [2023-12-21 23:44:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742888286] [2023-12-21 23:44:47,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:44:47,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:47,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:47,732 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:47,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 23:44:47,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:44:47,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:44:47,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:44:47,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-21 23:44:48,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:48,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742888286] [2023-12-21 23:44:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742888286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:48,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:48,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:44:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445026405] [2023-12-21 23:44:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:44:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:44:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:48,335 INFO L87 Difference]: Start difference. First operand 5747 states and 7607 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:48,556 INFO L93 Difference]: Finished difference Result 6334 states and 8364 transitions. [2023-12-21 23:44:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:44:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 130 [2023-12-21 23:44:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:48,561 INFO L225 Difference]: With dead ends: 6334 [2023-12-21 23:44:48,561 INFO L226 Difference]: Without dead ends: 5993 [2023-12-21 23:44:48,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:44:48,563 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1516 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:48,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3136 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:44:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2023-12-21 23:44:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5925. [2023-12-21 23:44:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5925 states, 5923 states have (on average 1.317744386290731) internal successors, (7805), 5924 states have internal predecessors, (7805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 7805 transitions. [2023-12-21 23:44:48,726 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 7805 transitions. Word has length 130 [2023-12-21 23:44:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 5925 states and 7805 transitions. [2023-12-21 23:44:48,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 7805 transitions. [2023-12-21 23:44:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:44:48,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:48,734 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:48,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:48,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:48,937 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:48,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash -920823723, now seen corresponding path program 1 times [2023-12-21 23:44:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050400863] [2023-12-21 23:44:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:48,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:48,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:48,939 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:48,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 23:44:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:49,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:44:49,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:50,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:51,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050400863] [2023-12-21 23:44:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050400863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:51,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:44:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685911400] [2023-12-21 23:44:51,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:44:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:44:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:44:51,794 INFO L87 Difference]: Start difference. First operand 5925 states and 7805 transitions. Second operand has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:45:08,194 INFO L93 Difference]: Finished difference Result 7448 states and 9609 transitions. [2023-12-21 23:45:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 23:45:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 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 131 [2023-12-21 23:45:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:45:08,202 INFO L225 Difference]: With dead ends: 7448 [2023-12-21 23:45:08,202 INFO L226 Difference]: Without dead ends: 6366 [2023-12-21 23:45:08,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=3247, Invalid=20933, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 23:45:08,209 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 27131 mSDsluCounter, 13990 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27131 SdHoareTripleChecker+Valid, 15609 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:45:08,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27131 Valid, 15609 Invalid, 2751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 23:45:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2023-12-21 23:45:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6145. [2023-12-21 23:45:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 6143 states have (on average 1.3115741494383852) internal successors, (8057), 6144 states have internal predecessors, (8057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8057 transitions. [2023-12-21 23:45:08,428 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8057 transitions. Word has length 131 [2023-12-21 23:45:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:45:08,428 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 8057 transitions. [2023-12-21 23:45:08,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8057 transitions. [2023-12-21 23:45:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:45:08,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:45:08,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:45:08,434 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 23:45:08,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:08,635 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:45:08,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:45:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1393054215, now seen corresponding path program 1 times [2023-12-21 23:45:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:45:08,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750687528] [2023-12-21 23:45:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:45:08,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:08,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:45:08,637 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:45:08,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 23:45:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:45:08,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:45:08,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:45:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 23:45:10,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:45:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 61 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:45:13,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:45:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750687528] [2023-12-21 23:45:13,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750687528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:45:13,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:45:13,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-21 23:45:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927534562] [2023-12-21 23:45:13,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:45:13,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 23:45:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:45:13,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 23:45:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 23:45:13,524 INFO L87 Difference]: Start difference. First operand 6145 states and 8057 transitions. Second operand has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:58,623 INFO L93 Difference]: Finished difference Result 11170 states and 13900 transitions. [2023-12-21 23:46:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-21 23:46:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 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 131 [2023-12-21 23:46:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:58,633 INFO L225 Difference]: With dead ends: 11170 [2023-12-21 23:46:58,633 INFO L226 Difference]: Without dead ends: 8892 [2023-12-21 23:46:58,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47295 ImplicationChecksByTransitivity, 94.7s TimeCoverageRelationStatistics Valid=12461, Invalid=99429, Unknown=0, NotChecked=0, Total=111890 [2023-12-21 23:46:58,642 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 21844 mSDsluCounter, 19055 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21844 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:58,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21844 Valid, 20673 Invalid, 4091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-21 23:46:58,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2023-12-21 23:46:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 7110. [2023-12-21 23:46:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 7108 states have (on average 1.2917839054586382) internal successors, (9182), 7109 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 9182 transitions. [2023-12-21 23:46:58,928 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 9182 transitions. Word has length 131 [2023-12-21 23:46:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:58,929 INFO L495 AbstractCegarLoop]: Abstraction has 7110 states and 9182 transitions. [2023-12-21 23:46:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 9182 transitions. [2023-12-21 23:46:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:46:58,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:58,932 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:58,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:59,136 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:59,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1497257115, now seen corresponding path program 1 times [2023-12-21 23:46:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969960913] [2023-12-21 23:46:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:46:59,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:59,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:59,138 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:59,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 23:46:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:46:59,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:46:59,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:47:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:47:01,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:47:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:47:02,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:47:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969960913] [2023-12-21 23:47:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969960913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:47:02,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:47:02,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:47:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853334655] [2023-12-21 23:47:02,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:47:02,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:47:02,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:47:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:47:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:47:02,667 INFO L87 Difference]: Start difference. First operand 7110 states and 9182 transitions. Second operand has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:47:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:47:52,254 INFO L93 Difference]: Finished difference Result 11309 states and 14101 transitions. [2023-12-21 23:47:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-21 23:47:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 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 132 [2023-12-21 23:47:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:47:52,263 INFO L225 Difference]: With dead ends: 11309 [2023-12-21 23:47:52,263 INFO L226 Difference]: Without dead ends: 10170 [2023-12-21 23:47:52,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14587 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=5810, Invalid=31246, Unknown=0, NotChecked=0, Total=37056 [2023-12-21 23:47:52,275 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 16408 mSDsluCounter, 17128 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16408 SdHoareTripleChecker+Valid, 18732 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:47:52,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16408 Valid, 18732 Invalid, 2627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-21 23:47:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2023-12-21 23:47:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 8892. [2023-12-21 23:47:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8892 states, 8890 states have (on average 1.2660292463442069) internal successors, (11255), 8891 states have internal predecessors, (11255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:47:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 11255 transitions. [2023-12-21 23:47:52,716 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 11255 transitions. Word has length 132 [2023-12-21 23:47:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:47:52,716 INFO L495 AbstractCegarLoop]: Abstraction has 8892 states and 11255 transitions. [2023-12-21 23:47:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:47:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 11255 transitions. [2023-12-21 23:47:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:47:52,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:47:52,719 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:47:52,723 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 (29)] Ended with exit code 0 [2023-12-21 23:47:52,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:47:52,923 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:47:52,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:47:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 106402649, now seen corresponding path program 1 times [2023-12-21 23:47:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:47:52,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854742488] [2023-12-21 23:47:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:47:52,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:47:52,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:47:52,925 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:47:52,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 23:47:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:47:53,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:47:53,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:47:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:47:54,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:47:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:47:56,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:47:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854742488] [2023-12-21 23:47:56,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854742488] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:47:56,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:47:56,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:47:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521451301] [2023-12-21 23:47:56,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:47:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:47:56,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:47:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:47:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:47:56,294 INFO L87 Difference]: Start difference. First operand 8892 states and 11255 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:48:48,757 INFO L93 Difference]: Finished difference Result 13828 states and 17110 transitions. [2023-12-21 23:48:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 23:48:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 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 132 [2023-12-21 23:48:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:48:48,766 INFO L225 Difference]: With dead ends: 13828 [2023-12-21 23:48:48,766 INFO L226 Difference]: Without dead ends: 11757 [2023-12-21 23:48:48,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19475 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=7234, Invalid=42272, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 23:48:48,777 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 23781 mSDsluCounter, 16802 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23781 SdHoareTripleChecker+Valid, 18393 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:48:48,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23781 Valid, 18393 Invalid, 2252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-21 23:48:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11757 states. [2023-12-21 23:48:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11757 to 9947. [2023-12-21 23:48:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9947 states, 9945 states have (on average 1.2576168929110105) internal successors, (12507), 9946 states have internal predecessors, (12507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9947 states to 9947 states and 12507 transitions. [2023-12-21 23:48:49,299 INFO L78 Accepts]: Start accepts. Automaton has 9947 states and 12507 transitions. Word has length 132 [2023-12-21 23:48:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:48:49,299 INFO L495 AbstractCegarLoop]: Abstraction has 9947 states and 12507 transitions. [2023-12-21 23:48:49,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9947 states and 12507 transitions. [2023-12-21 23:48:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 23:48:49,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:48:49,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:48:49,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-21 23:48:49,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:49,506 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:48:49,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:48:49,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1945763355, now seen corresponding path program 1 times [2023-12-21 23:48:49,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:48:49,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002829375] [2023-12-21 23:48:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:48:49,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:48:49,508 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:48:49,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 23:48:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:48:49,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 23:48:49,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:48:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:48:49,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:48:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:48:50,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:48:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002829375] [2023-12-21 23:48:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002829375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:48:50,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:48:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 23:48:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744955392] [2023-12-21 23:48:50,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:48:50,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 23:48:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:48:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 23:48:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 23:48:50,042 INFO L87 Difference]: Start difference. First operand 9947 states and 12507 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:48:51,662 INFO L93 Difference]: Finished difference Result 33899 states and 41283 transitions. [2023-12-21 23:48:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 23:48:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 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 134 [2023-12-21 23:48:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:48:51,688 INFO L225 Difference]: With dead ends: 33899 [2023-12-21 23:48:51,688 INFO L226 Difference]: Without dead ends: 27543 [2023-12-21 23:48:51,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 23:48:51,693 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1716 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 7850 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:48:51,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 7850 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:48:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27543 states. [2023-12-21 23:48:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27543 to 27169. [2023-12-21 23:48:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27169 states, 27167 states have (on average 1.1637280524165348) internal successors, (31615), 27168 states have internal predecessors, (31615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27169 states to 27169 states and 31615 transitions. [2023-12-21 23:48:53,279 INFO L78 Accepts]: Start accepts. Automaton has 27169 states and 31615 transitions. Word has length 134 [2023-12-21 23:48:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:48:53,279 INFO L495 AbstractCegarLoop]: Abstraction has 27169 states and 31615 transitions. [2023-12-21 23:48:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 27169 states and 31615 transitions. [2023-12-21 23:48:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:48:53,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:48:53,282 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:48:53,288 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 (31)] Forceful destruction successful, exit code 0 [2023-12-21 23:48:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:53,486 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:48:53,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:48:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -383797449, now seen corresponding path program 1 times [2023-12-21 23:48:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:48:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392055308] [2023-12-21 23:48:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:48:53,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:53,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:48:53,488 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:48:53,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 23:48:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:48:53,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:48:53,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:48:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:48:55,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:48:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:48:55,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:48:55,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392055308] [2023-12-21 23:48:55,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392055308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:48:55,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:48:55,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:48:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252009394] [2023-12-21 23:48:55,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:48:55,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:48:55,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:48:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:48:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:48:55,999 INFO L87 Difference]: Start difference. First operand 27169 states and 31615 transitions. Second operand has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:49:02,003 INFO L93 Difference]: Finished difference Result 36657 states and 42556 transitions. [2023-12-21 23:49:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:49:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 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 135 [2023-12-21 23:49:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:49:02,024 INFO L225 Difference]: With dead ends: 36657 [2023-12-21 23:49:02,025 INFO L226 Difference]: Without dead ends: 23529 [2023-12-21 23:49:02,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=914, Invalid=5248, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 23:49:02,032 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 26555 mSDsluCounter, 13468 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26555 SdHoareTripleChecker+Valid, 15010 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:49:02,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26555 Valid, 15010 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 23:49:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23529 states. [2023-12-21 23:49:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23529 to 18970. [2023-12-21 23:49:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18970 states, 18968 states have (on average 1.1668072543230705) internal successors, (22132), 18969 states have internal predecessors, (22132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18970 states to 18970 states and 22132 transitions. [2023-12-21 23:49:03,122 INFO L78 Accepts]: Start accepts. Automaton has 18970 states and 22132 transitions. Word has length 135 [2023-12-21 23:49:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:49:03,122 INFO L495 AbstractCegarLoop]: Abstraction has 18970 states and 22132 transitions. [2023-12-21 23:49:03,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 18970 states and 22132 transitions. [2023-12-21 23:49:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:49:03,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:49:03,125 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:49:03,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-21 23:49:03,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:03,327 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:49:03,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:49:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2031815831, now seen corresponding path program 1 times [2023-12-21 23:49:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:49:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347910067] [2023-12-21 23:49:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:49:03,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:49:03,329 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:49:03,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 23:49:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:49:03,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:49:03,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:49:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:49:04,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:49:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:49:05,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:49:05,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347910067] [2023-12-21 23:49:05,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347910067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:49:05,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:49:05,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:49:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257222874] [2023-12-21 23:49:05,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:49:05,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:49:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:49:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:49:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:49:05,793 INFO L87 Difference]: Start difference. First operand 18970 states and 22132 transitions. Second operand has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:49:11,622 INFO L93 Difference]: Finished difference Result 21721 states and 25215 transitions. [2023-12-21 23:49:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 23:49:11,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 23:49:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:49:11,638 INFO L225 Difference]: With dead ends: 21721 [2023-12-21 23:49:11,638 INFO L226 Difference]: Without dead ends: 15013 [2023-12-21 23:49:11,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=884, Invalid=4816, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 23:49:11,646 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 27826 mSDsluCounter, 13311 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27826 SdHoareTripleChecker+Valid, 14852 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:49:11,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27826 Valid, 14852 Invalid, 2092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 23:49:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15013 states. [2023-12-21 23:49:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15013 to 10061. [2023-12-21 23:49:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10061 states, 10059 states have (on average 1.1954468635053186) internal successors, (12025), 10060 states have internal predecessors, (12025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 12025 transitions. [2023-12-21 23:49:12,283 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 12025 transitions. Word has length 135 [2023-12-21 23:49:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:49:12,284 INFO L495 AbstractCegarLoop]: Abstraction has 10061 states and 12025 transitions. [2023-12-21 23:49:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 12025 transitions. [2023-12-21 23:49:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:49:12,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:49:12,286 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:49:12,289 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 (33)] Forceful destruction successful, exit code 0 [2023-12-21 23:49:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:12,489 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:49:12,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:49:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash -779477005, now seen corresponding path program 1 times [2023-12-21 23:49:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:49:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147391461] [2023-12-21 23:49:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:49:12,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:12,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:49:12,491 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:49:12,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 23:49:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:49:12,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:49:12,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:49:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:49:16,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:49:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:49:19,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:49:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147391461] [2023-12-21 23:49:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147391461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:49:19,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:49:19,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2023-12-21 23:49:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582188678] [2023-12-21 23:49:19,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:49:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 23:49:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:49:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 23:49:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 23:49:19,313 INFO L87 Difference]: Start difference. First operand 10061 states and 12025 transitions. Second operand has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:26,276 INFO L93 Difference]: Finished difference Result 17324 states and 19831 transitions. [2023-12-21 23:50:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-21 23:50:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:50:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:26,290 INFO L225 Difference]: With dead ends: 17324 [2023-12-21 23:50:26,290 INFO L226 Difference]: Without dead ends: 12424 [2023-12-21 23:50:26,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11221 ImplicationChecksByTransitivity, 54.6s TimeCoverageRelationStatistics Valid=4356, Invalid=28586, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 23:50:26,294 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 16394 mSDsluCounter, 25808 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16394 SdHoareTripleChecker+Valid, 27382 SdHoareTripleChecker+Invalid, 3546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:26,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16394 Valid, 27382 Invalid, 3546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-12-21 23:50:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2023-12-21 23:50:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 10654. [2023-12-21 23:50:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10654 states, 10652 states have (on average 1.1872887720615848) internal successors, (12647), 10653 states have internal predecessors, (12647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10654 states to 10654 states and 12647 transitions. [2023-12-21 23:50:26,937 INFO L78 Accepts]: Start accepts. Automaton has 10654 states and 12647 transitions. Word has length 136 [2023-12-21 23:50:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:26,937 INFO L495 AbstractCegarLoop]: Abstraction has 10654 states and 12647 transitions. [2023-12-21 23:50:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 10654 states and 12647 transitions. [2023-12-21 23:50:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:50:26,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:26,939 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:26,943 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 (34)] Ended with exit code 0 [2023-12-21 23:50:27,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,142 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:27,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash -429364685, now seen corresponding path program 1 times [2023-12-21 23:50:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:27,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612780697] [2023-12-21 23:50:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:27,144 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:27,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 23:50:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:27,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 23:50:27,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 50 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:50:29,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 66 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:31,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612780697] [2023-12-21 23:50:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612780697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:31,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:31,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-21 23:50:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640568658] [2023-12-21 23:50:31,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:31,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 23:50:31,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:31,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 23:50:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:50:31,950 INFO L87 Difference]: Start difference. First operand 10654 states and 12647 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:13,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:51:13,053 INFO L93 Difference]: Finished difference Result 16461 states and 18860 transitions. [2023-12-21 23:51:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 23:51:13,055 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:51:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:51:13,067 INFO L225 Difference]: With dead ends: 16461 [2023-12-21 23:51:13,068 INFO L226 Difference]: Without dead ends: 15330 [2023-12-21 23:51:13,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18420 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=5291, Invalid=46011, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 23:51:13,073 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 25478 mSDsluCounter, 25149 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25478 SdHoareTripleChecker+Valid, 26756 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:51:13,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25478 Valid, 26756 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-21 23:51:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2023-12-21 23:51:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 12873. [2023-12-21 23:51:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12873 states, 12871 states have (on average 1.1657990832103178) internal successors, (15005), 12872 states have internal predecessors, (15005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12873 states to 12873 states and 15005 transitions. [2023-12-21 23:51:14,021 INFO L78 Accepts]: Start accepts. Automaton has 12873 states and 15005 transitions. Word has length 136 [2023-12-21 23:51:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:51:14,021 INFO L495 AbstractCegarLoop]: Abstraction has 12873 states and 15005 transitions. [2023-12-21 23:51:14,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 12873 states and 15005 transitions. [2023-12-21 23:51:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:51:14,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:51:14,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:51:14,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-21 23:51:14,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:14,227 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:51:14,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:51:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1284983173, now seen corresponding path program 1 times [2023-12-21 23:51:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:51:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626036571] [2023-12-21 23:51:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:51:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:51:14,229 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:51:14,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 23:51:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:51:14,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:51:14,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:51:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 65 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:51:15,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:51:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 135 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:51:16,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:51:16,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626036571] [2023-12-21 23:51:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626036571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:51:16,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:51:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-21 23:51:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885243020] [2023-12-21 23:51:16,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:51:16,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 23:51:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:51:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 23:51:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-21 23:51:16,080 INFO L87 Difference]: Start difference. First operand 12873 states and 15005 transitions. Second operand has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:51:18,389 INFO L93 Difference]: Finished difference Result 14939 states and 17195 transitions. [2023-12-21 23:51:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 23:51:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:51:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:51:18,400 INFO L225 Difference]: With dead ends: 14939 [2023-12-21 23:51:18,400 INFO L226 Difference]: Without dead ends: 10694 [2023-12-21 23:51:18,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 23:51:18,405 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 14823 mSDsluCounter, 4944 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14823 SdHoareTripleChecker+Valid, 6468 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:51:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14823 Valid, 6468 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 23:51:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2023-12-21 23:51:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 9376. [2023-12-21 23:51:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9374 states have (on average 1.1901002773629188) internal successors, (11156), 9375 states have internal predecessors, (11156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 11156 transitions. [2023-12-21 23:51:19,054 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 11156 transitions. Word has length 136 [2023-12-21 23:51:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:51:19,055 INFO L495 AbstractCegarLoop]: Abstraction has 9376 states and 11156 transitions. [2023-12-21 23:51:19,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 11156 transitions. [2023-12-21 23:51:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:51:19,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:51:19,056 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:51:19,060 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 23:51:19,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:19,260 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:51:19,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:51:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -598044909, now seen corresponding path program 1 times [2023-12-21 23:51:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:51:19,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404224136] [2023-12-21 23:51:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:51:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:51:19,262 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:51:19,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 23:51:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:51:19,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 23:51:19,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:51:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 69 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:51:21,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:51:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:51:24,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:51:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404224136] [2023-12-21 23:51:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404224136] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:51:24,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:51:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-21 23:51:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348646032] [2023-12-21 23:51:24,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:51:24,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 23:51:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:51:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 23:51:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 23:51:24,123 INFO L87 Difference]: Start difference. First operand 9376 states and 11156 transitions. Second operand has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:08,822 INFO L93 Difference]: Finished difference Result 12625 states and 14553 transitions. [2023-12-21 23:52:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-21 23:52:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:52:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:08,832 INFO L225 Difference]: With dead ends: 12625 [2023-12-21 23:52:08,832 INFO L226 Difference]: Without dead ends: 9335 [2023-12-21 23:52:08,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20198 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=5748, Invalid=50184, Unknown=0, NotChecked=0, Total=55932 [2023-12-21 23:52:08,839 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 32530 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32530 SdHoareTripleChecker+Valid, 17349 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:08,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32530 Valid, 17349 Invalid, 3733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 3567 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 23:52:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9335 states. [2023-12-21 23:52:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9335 to 7363. [2023-12-21 23:52:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7363 states, 7361 states have (on average 1.2177693248199972) internal successors, (8964), 7362 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7363 states to 7363 states and 8964 transitions. [2023-12-21 23:52:09,286 INFO L78 Accepts]: Start accepts. Automaton has 7363 states and 8964 transitions. Word has length 136 [2023-12-21 23:52:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:09,286 INFO L495 AbstractCegarLoop]: Abstraction has 7363 states and 8964 transitions. [2023-12-21 23:52:09,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7363 states and 8964 transitions. [2023-12-21 23:52:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 23:52:09,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:09,287 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:52:09,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-21 23:52:09,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:09,491 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:09,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2102404975, now seen corresponding path program 2 times [2023-12-21 23:52:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:09,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522072725] [2023-12-21 23:52:09,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:52:09,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:09,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:09,493 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:09,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 23:52:09,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 23:52:09,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:52:09,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 23:52:09,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 137 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 23:52:11,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:52:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 39 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:52:15,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:52:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522072725] [2023-12-21 23:52:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522072725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:52:15,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:52:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 47 [2023-12-21 23:52:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391195654] [2023-12-21 23:52:15,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:52:15,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 23:52:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:52:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 23:52:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1903, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 23:52:15,407 INFO L87 Difference]: Start difference. First operand 7363 states and 8964 transitions. Second operand has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:58,579 INFO L93 Difference]: Finished difference Result 11015 states and 12780 transitions. [2023-12-21 23:52:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-21 23:52:58,580 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 23:52:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:58,588 INFO L225 Difference]: With dead ends: 11015 [2023-12-21 23:52:58,589 INFO L226 Difference]: Without dead ends: 9314 [2023-12-21 23:52:58,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18817 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=5499, Invalid=44901, Unknown=0, NotChecked=0, Total=50400 [2023-12-21 23:52:58,594 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 25136 mSDsluCounter, 21217 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25136 SdHoareTripleChecker+Valid, 22750 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:58,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25136 Valid, 22750 Invalid, 3620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [174 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-21 23:52:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2023-12-21 23:52:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 7432. [2023-12-21 23:52:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7430 states have (on average 1.2129205921938089) internal successors, (9012), 7431 states have internal predecessors, (9012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 9012 transitions. [2023-12-21 23:52:59,070 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 9012 transitions. Word has length 137 [2023-12-21 23:52:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:59,071 INFO L495 AbstractCegarLoop]: Abstraction has 7432 states and 9012 transitions. [2023-12-21 23:52:59,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 9012 transitions. [2023-12-21 23:52:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 23:52:59,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:59,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:52:59,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-21 23:52:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:59,276 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1786159469, now seen corresponding path program 1 times [2023-12-21 23:52:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731420492] [2023-12-21 23:52:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:52:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:59,279 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:59,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 23:52:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:52:59,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 23:52:59,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:53:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 149 proven. 40 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:53:00,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:53:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:53:01,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:53:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731420492] [2023-12-21 23:53:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731420492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:53:01,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:53:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-21 23:53:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475737675] [2023-12-21 23:53:01,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:53:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 23:53:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:53:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 23:53:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-21 23:53:01,312 INFO L87 Difference]: Start difference. First operand 7432 states and 9012 transitions. Second operand has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:53:03,881 INFO L93 Difference]: Finished difference Result 8806 states and 10450 transitions. [2023-12-21 23:53:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 23:53:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 23:53:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:53:03,888 INFO L225 Difference]: With dead ends: 8806 [2023-12-21 23:53:03,888 INFO L226 Difference]: Without dead ends: 6841 [2023-12-21 23:53:03,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=519, Invalid=1737, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 23:53:03,890 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 13697 mSDsluCounter, 12215 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13697 SdHoareTripleChecker+Valid, 13726 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:53:03,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13697 Valid, 13726 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 23:53:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2023-12-21 23:53:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6158. [2023-12-21 23:53:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6156 states have (on average 1.2430149447693308) internal successors, (7652), 6157 states have internal predecessors, (7652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 7652 transitions. [2023-12-21 23:53:04,308 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 7652 transitions. Word has length 138 [2023-12-21 23:53:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:53:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 7652 transitions. [2023-12-21 23:53:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 7652 transitions. [2023-12-21 23:53:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 23:53:04,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:53:04,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:53:04,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-21 23:53:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:04,514 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:53:04,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:53:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash -253963177, now seen corresponding path program 1 times [2023-12-21 23:53:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:53:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320596757] [2023-12-21 23:53:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:53:04,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:04,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:53:04,515 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:53:04,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 23:53:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:53:04,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 23:53:04,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:53:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:53:07,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:53:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:53:09,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:53:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320596757] [2023-12-21 23:53:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320596757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:53:09,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:53:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-21 23:53:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536318393] [2023-12-21 23:53:09,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:53:09,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 23:53:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:53:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 23:53:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 23:53:09,235 INFO L87 Difference]: Start difference. First operand 6158 states and 7652 transitions. Second operand has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:17,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-21 23:54:23,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-21 23:55:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:55:41,861 INFO L93 Difference]: Finished difference Result 6554 states and 8057 transitions. [2023-12-21 23:55:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 23:55:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-21 23:55:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:55:41,866 INFO L225 Difference]: With dead ends: 6554 [2023-12-21 23:55:41,866 INFO L226 Difference]: Without dead ends: 6249 [2023-12-21 23:55:41,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 126.2s TimeCoverageRelationStatistics Valid=1473, Invalid=6356, Unknown=3, NotChecked=0, Total=7832 [2023-12-21 23:55:41,869 INFO L413 NwaCegarLoop]: 1487 mSDtfsCounter, 3978 mSDsluCounter, 22553 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 24040 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:55:41,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3978 Valid, 24040 Invalid, 1561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1494 Invalid, 1 Unknown, 0 Unchecked, 28.7s Time] [2023-12-21 23:55:41,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2023-12-21 23:55:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5855. [2023-12-21 23:55:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5855 states, 5853 states have (on average 1.253545190500598) internal successors, (7337), 5854 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:55:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5855 states to 5855 states and 7337 transitions. [2023-12-21 23:55:42,219 INFO L78 Accepts]: Start accepts. Automaton has 5855 states and 7337 transitions. Word has length 141 [2023-12-21 23:55:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:55:42,219 INFO L495 AbstractCegarLoop]: Abstraction has 5855 states and 7337 transitions. [2023-12-21 23:55:42,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:55:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5855 states and 7337 transitions. [2023-12-21 23:55:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 23:55:42,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:55:42,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:55:42,227 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 (40)] Forceful destruction successful, exit code 0 [2023-12-21 23:55:42,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:55:42,425 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:55:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:55:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash -162708378, now seen corresponding path program 1 times [2023-12-21 23:55:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:55:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880128170] [2023-12-21 23:55:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:55:42,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:55:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:55:42,427 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:55:42,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 23:55:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:55:42,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:55:42,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:55:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:55:42,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:55:42,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:55:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880128170] [2023-12-21 23:55:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880128170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:55:42,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:55:42,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:55:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347393884] [2023-12-21 23:55:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:55:42,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:55:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:55:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:55:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:55:42,599 INFO L87 Difference]: Start difference. First operand 5855 states and 7337 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:20,402 INFO L93 Difference]: Finished difference Result 11865 states and 16110 transitions. [2023-12-21 23:56:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-21 23:56:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:20,416 INFO L225 Difference]: With dead ends: 11865 [2023-12-21 23:56:20,416 INFO L226 Difference]: Without dead ends: 8859 [2023-12-21 23:56:20,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:20,421 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 724 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:20,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 720 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 37.3s Time] [2023-12-21 23:56:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8859 states. [2023-12-21 23:56:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8859 to 8859. [2023-12-21 23:56:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8859 states, 8857 states have (on average 1.1966805916224454) internal successors, (10599), 8858 states have internal predecessors, (10599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8859 states to 8859 states and 10599 transitions. [2023-12-21 23:56:20,935 INFO L78 Accepts]: Start accepts. Automaton has 8859 states and 10599 transitions. Word has length 156 [2023-12-21 23:56:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:20,935 INFO L495 AbstractCegarLoop]: Abstraction has 8859 states and 10599 transitions. [2023-12-21 23:56:20,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 8859 states and 10599 transitions. [2023-12-21 23:56:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-21 23:56:20,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:20,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:20,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:21,143 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:21,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1016258322, now seen corresponding path program 1 times [2023-12-21 23:56:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823189820] [2023-12-21 23:56:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:21,157 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:21,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 23:56:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:21,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:56:21,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:21,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:21,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823189820] [2023-12-21 23:56:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823189820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:56:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566800761] [2023-12-21 23:56:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:21,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:21,912 INFO L87 Difference]: Start difference. First operand 8859 states and 10599 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 23:56:58,022 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:56:58,030 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:56:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:58,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:58,107 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 671 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:58,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 640 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2023-12-21 23:56:58,108 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-21 23:56:58,114 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 (42)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:58,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:58,310 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8859states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (13311 states constructed, input type IntersectNwa). [2023-12-21 23:56:58,311 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-21 23:56:58,327 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:58,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 23:56:58,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:56:58 BoogieIcfgContainer [2023-12-21 23:56:58,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 23:56:58,335 INFO L158 Benchmark]: Toolchain (without parser) took 872983.85ms. Allocated memory was 284.2MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 216.8MB in the beginning and 1.2GB in the end (delta: -944.7MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-21 23:56:58,335 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 211.8MB. Free memory was 158.9MB in the beginning and 158.7MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 23:56:58,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1579.13ms. Allocated memory is still 284.2MB. Free memory was 216.8MB in the beginning and 213.7MB in the end (delta: 3.1MB). Peak memory consumption was 154.5MB. Max. memory is 8.0GB. [2023-12-21 23:56:58,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.88ms. Allocated memory is still 284.2MB. Free memory was 213.7MB in the beginning and 178.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-21 23:56:58,336 INFO L158 Benchmark]: Boogie Preprocessor took 234.73ms. Allocated memory is still 284.2MB. Free memory was 178.0MB in the beginning and 139.8MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-21 23:56:58,336 INFO L158 Benchmark]: RCFGBuilder took 25586.47ms. Allocated memory was 284.2MB in the beginning and 702.5MB in the end (delta: 418.4MB). Free memory was 139.8MB in the beginning and 561.8MB in the end (delta: -422.1MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. [2023-12-21 23:56:58,336 INFO L158 Benchmark]: TraceAbstraction took 845395.85ms. Allocated memory was 702.5MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 561.3MB in the beginning and 1.2GB in the end (delta: -600.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 23:56:58,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 211.8MB. Free memory was 158.9MB in the beginning and 158.7MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1579.13ms. Allocated memory is still 284.2MB. Free memory was 216.8MB in the beginning and 213.7MB in the end (delta: 3.1MB). Peak memory consumption was 154.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 180.88ms. Allocated memory is still 284.2MB. Free memory was 213.7MB in the beginning and 178.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 234.73ms. Allocated memory is still 284.2MB. Free memory was 178.0MB in the beginning and 139.8MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 25586.47ms. Allocated memory was 284.2MB in the beginning and 702.5MB in the end (delta: 418.4MB). Free memory was 139.8MB in the beginning and 561.8MB in the end (delta: -422.1MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. * TraceAbstraction took 845395.85ms. Allocated memory was 702.5MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 561.3MB in the beginning and 1.2GB in the end (delta: -600.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 488]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 488). Cancelled while NwaCegarLoop was constructing difference of abstraction (8859states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (13311 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (8859states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (13311 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 845.3s, OverallIterations: 41, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 759.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 346833 SdHoareTripleChecker+Valid, 249.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346833 mSDsluCounter, 431162 SdHoareTripleChecker+Invalid, 218.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 371906 mSDsCounter, 3530 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50706 IncrementalHoareTripleChecker+Invalid, 54237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3530 mSolverCounterUnsat, 59256 mSDtfsCounter, 50706 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8286 GetRequests, 5777 SyntacticMatches, 1 SemanticMatches, 2508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167147 ImplicationChecksByTransitivity, 518.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27169occurred in iteration=30, InterpolantAutomatonStates: 2063, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 40 MinimizatonAttempts, 29337 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 63.6s InterpolantComputationTime, 3907 NumberOfCodeBlocks, 3643 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6412 ConstructedInterpolants, 1328 QuantifiedInterpolants, 85249 SizeOfPredicates, 206 NumberOfNonLiveVariables, 8183 ConjunctsInSsa, 455 ConjunctsInUnsatCore, 64 InterpolantComputations, 18 PerfectInterpolantSequences, 4480/8100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown