/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/loops-crafted-1/in-de31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:27:19,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:27:19,365 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:27:19,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:27:19,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:27:19,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:27:19,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:27:19,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:27:19,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:27:19,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:27:19,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:27:19,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:27:19,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:27:19,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:27:19,397 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:27:19,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:27:19,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:27:19,398 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:27:19,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:27:19,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:27:19,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:27:19,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:27:19,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:27:19,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:27:19,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:27:19,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:27:19,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:27:19,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:27:19,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:27:19,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:27:19,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:27:19,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:27:19,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:27:19,403 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:27:19,403 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:27:19,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:27:19,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:27:19,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:27:19,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:27:19,621 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:27:19,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de31.c [2023-12-24 23:27:20,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:27:20,747 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:27:20,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de31.c [2023-12-24 23:27:20,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6316b97/643272f2704e46edbab130d0647d1376/FLAG20b4f1605 [2023-12-24 23:27:20,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6316b97/643272f2704e46edbab130d0647d1376 [2023-12-24 23:27:20,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:27:20,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:27:20,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:27:20,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:27:20,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:27:20,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621d10c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20, skipping insertion in model container [2023-12-24 23:27:20,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:27:20,897 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de31.c[368,381] [2023-12-24 23:27:20,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:27:20,920 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:27:20,929 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de31.c[368,381] [2023-12-24 23:27:20,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:27:20,944 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:27:20,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20 WrapperNode [2023-12-24 23:27:20,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:27:20,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:27:20,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:27:20,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:27:20,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,967 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-12-24 23:27:20,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:27:20,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:27:20,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:27:20,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:27:20,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,994 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 23:27:20,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:20,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:27:21,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:27:21,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:27:21,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:27:21,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (1/1) ... [2023-12-24 23:27:21,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:27:21,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:27:21,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 23:27:21,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 23:27:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:27:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:27:21,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:27:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:27:21,109 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:27:21,112 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:27:21,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:27:21,238 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:27:21,238 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-24 23:27:21,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:27:21 BoogieIcfgContainer [2023-12-24 23:27:21,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:27:21,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:27:21,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:27:21,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:27:21,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:27:20" (1/3) ... [2023-12-24 23:27:21,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c5dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:27:21, skipping insertion in model container [2023-12-24 23:27:21,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:27:20" (2/3) ... [2023-12-24 23:27:21,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c5dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:27:21, skipping insertion in model container [2023-12-24 23:27:21,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:27:21" (3/3) ... [2023-12-24 23:27:21,244 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de31.c [2023-12-24 23:27:21,255 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:27:21,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:27:21,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:27:21,294 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;@b94447f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:27:21,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:27:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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) [2023-12-24 23:27:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-24 23:27:21,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:21,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:21,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:21,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash -593791358, now seen corresponding path program 1 times [2023-12-24 23:27:21,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:21,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357397079] [2023-12-24 23:27:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:27:21,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:21,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:21,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:21,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 23:27:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:27:21,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:27:21,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:21,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:27:21,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357397079] [2023-12-24 23:27:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357397079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:27:21,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:27:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 23:27:21,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945860691] [2023-12-24 23:27:21,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:27:21,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:27:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:27:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:27:21,622 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:21,728 INFO L93 Difference]: Finished difference Result 27 states and 44 transitions. [2023-12-24 23:27:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:27:21,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-24 23:27:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:21,735 INFO L225 Difference]: With dead ends: 27 [2023-12-24 23:27:21,735 INFO L226 Difference]: Without dead ends: 10 [2023-12-24 23:27:21,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 23:27:21,741 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:21,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 21 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:27:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-24 23:27:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-24 23:27:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-24 23:27:21,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 8 [2023-12-24 23:27:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:21,762 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-24 23:27:21,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-24 23:27:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 23:27:21,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:21,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:21,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:21,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:21,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1017158531, now seen corresponding path program 1 times [2023-12-24 23:27:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:21,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599157437] [2023-12-24 23:27:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:27:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:21,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:21,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 23:27:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:27:21,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:27:21,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:22,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:22,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599157437] [2023-12-24 23:27:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599157437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:22,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 23:27:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959108540] [2023-12-24 23:27:22,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:27:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:27:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:27:22,059 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:22,170 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2023-12-24 23:27:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 23:27:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2023-12-24 23:27:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:22,174 INFO L225 Difference]: With dead ends: 32 [2023-12-24 23:27:22,174 INFO L226 Difference]: Without dead ends: 27 [2023-12-24 23:27:22,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:27:22,177 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:22,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 26 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-24 23:27:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2023-12-24 23:27:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-24 23:27:22,190 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 9 [2023-12-24 23:27:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:22,190 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-24 23:27:22,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-24 23:27:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 23:27:22,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:22,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:22,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:22,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:22,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:22,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash -307074158, now seen corresponding path program 1 times [2023-12-24 23:27:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307607316] [2023-12-24 23:27:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:27:22,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:22,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:22,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:22,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 23:27:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:27:22,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:27:22,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:22,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:22,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307607316] [2023-12-24 23:27:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307607316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:22,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:22,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 23:27:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520410214] [2023-12-24 23:27:22,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:22,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:27:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:27:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:27:22,645 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:22,887 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-12-24 23:27:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:27:22,888 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 11 [2023-12-24 23:27:22,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:22,888 INFO L225 Difference]: With dead ends: 40 [2023-12-24 23:27:22,889 INFO L226 Difference]: Without dead ends: 26 [2023-12-24 23:27:22,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-24 23:27:22,890 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:22,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 24 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-24 23:27:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2023-12-24 23:27:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-24 23:27:22,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2023-12-24 23:27:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-24 23:27:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-24 23:27:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-24 23:27:22,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:22,895 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:22,899 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 (4)] Ended with exit code 0 [2023-12-24 23:27:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:23,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:23,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1195192002, now seen corresponding path program 2 times [2023-12-24 23:27:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:23,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139804278] [2023-12-24 23:27:23,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:27:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:23,098 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:23,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 23:27:23,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:27:23,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:23,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:27:23,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:23,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:23,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139804278] [2023-12-24 23:27:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139804278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:23,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 23:27:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373011134] [2023-12-24 23:27:23,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:27:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:27:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:27:23,221 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:23,551 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2023-12-24 23:27:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 23:27:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 12 [2023-12-24 23:27:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:23,552 INFO L225 Difference]: With dead ends: 70 [2023-12-24 23:27:23,552 INFO L226 Difference]: Without dead ends: 65 [2023-12-24 23:27:23,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=595, Unknown=0, NotChecked=0, Total=870 [2023-12-24 23:27:23,554 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 138 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:23,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 60 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-24 23:27:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2023-12-24 23:27:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 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) [2023-12-24 23:27:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2023-12-24 23:27:23,562 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 12 [2023-12-24 23:27:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:23,562 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2023-12-24 23:27:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2023-12-24 23:27:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-24 23:27:23,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:23,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:23,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:23,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:23,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:23,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1481823070, now seen corresponding path program 2 times [2023-12-24 23:27:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116309288] [2023-12-24 23:27:23,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:27:23,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:23,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:23,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:27:23,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:23,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:27:23,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:23,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 23:27:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:23,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:23,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116309288] [2023-12-24 23:27:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116309288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:23,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 23:27:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442516830] [2023-12-24 23:27:23,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:27:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:27:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:27:23,862 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:24,069 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2023-12-24 23:27:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:27:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 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 13 [2023-12-24 23:27:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:24,070 INFO L225 Difference]: With dead ends: 68 [2023-12-24 23:27:24,070 INFO L226 Difference]: Without dead ends: 58 [2023-12-24 23:27:24,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2023-12-24 23:27:24,071 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 74 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:24,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 44 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-24 23:27:24,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2023-12-24 23:27:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2023-12-24 23:27:24,082 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 13 [2023-12-24 23:27:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:24,082 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2023-12-24 23:27:24,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2023-12-24 23:27:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 23:27:24,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:24,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:24,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:24,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1847797890, now seen corresponding path program 3 times [2023-12-24 23:27:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983668738] [2023-12-24 23:27:24,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:27:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:24,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:24,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 23:27:24,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:27:24,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:24,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:27:24,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:24,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:24,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983668738] [2023-12-24 23:27:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983668738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:24,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:27:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181525546] [2023-12-24 23:27:24,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:24,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 23:27:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:24,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 23:27:24,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-24 23:27:24,542 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:24,724 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2023-12-24 23:27:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 23:27:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 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 14 [2023-12-24 23:27:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:24,725 INFO L225 Difference]: With dead ends: 73 [2023-12-24 23:27:24,725 INFO L226 Difference]: Without dead ends: 55 [2023-12-24 23:27:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2023-12-24 23:27:24,726 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:24,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 84 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-24 23:27:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2023-12-24 23:27:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2023-12-24 23:27:24,734 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 14 [2023-12-24 23:27:24,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:24,734 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2023-12-24 23:27:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2023-12-24 23:27:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 23:27:24,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:24,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:24,739 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 [2023-12-24 23:27:24,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:24,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:24,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash -904677104, now seen corresponding path program 4 times [2023-12-24 23:27:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:24,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672167716] [2023-12-24 23:27:24,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:27:24,938 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 [2023-12-24 23:27:24,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:24,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:24,940 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 (8)] Waiting until timeout for monitored process [2023-12-24 23:27:24,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:27:24,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:24,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 23:27:24,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:27:25,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:27:25,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672167716] [2023-12-24 23:27:25,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672167716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:25,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:25,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-24 23:27:25,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712701374] [2023-12-24 23:27:25,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:25,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:27:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:27:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:27:25,072 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:25,573 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2023-12-24 23:27:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 23:27:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2023-12-24 23:27:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:25,575 INFO L225 Difference]: With dead ends: 89 [2023-12-24 23:27:25,576 INFO L226 Difference]: Without dead ends: 77 [2023-12-24 23:27:25,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 23:27:25,577 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 127 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:25,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 58 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-24 23:27:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2023-12-24 23:27:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2023-12-24 23:27:25,588 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 16 [2023-12-24 23:27:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:25,590 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2023-12-24 23:27:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2023-12-24 23:27:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-24 23:27:25,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:25,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:25,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:25,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:25,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1519806738, now seen corresponding path program 5 times [2023-12-24 23:27:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:25,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875347189] [2023-12-24 23:27:25,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:27:25,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:25,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:25,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:25,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 23:27:25,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-24 23:27:25,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:25,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 23:27:25,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:25,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:26,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875347189] [2023-12-24 23:27:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875347189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:26,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:26,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-24 23:27:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596583887] [2023-12-24 23:27:26,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:26,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:27:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:27:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:27:26,214 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:26,930 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2023-12-24 23:27:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 23:27:26,931 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2023-12-24 23:27:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:26,931 INFO L225 Difference]: With dead ends: 100 [2023-12-24 23:27:26,931 INFO L226 Difference]: Without dead ends: 76 [2023-12-24 23:27:26,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=1471, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 23:27:26,932 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 76 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:26,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 100 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:27:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-24 23:27:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2023-12-24 23:27:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2023-12-24 23:27:26,943 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 17 [2023-12-24 23:27:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:26,944 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2023-12-24 23:27:26,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2023-12-24 23:27:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 23:27:26,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:26,944 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:26,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 23:27:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:27,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:27,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1518488751, now seen corresponding path program 6 times [2023-12-24 23:27:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161168748] [2023-12-24 23:27:27,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:27:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:27,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:27,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 23:27:27,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-24 23:27:27,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:27,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 23:27:27,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:27:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:27:27,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161168748] [2023-12-24 23:27:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161168748] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:27,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:27,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 23:27:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890842350] [2023-12-24 23:27:27,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:27,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:27:27,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:27:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:27:27,410 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:29,061 INFO L93 Difference]: Finished difference Result 158 states and 243 transitions. [2023-12-24 23:27:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-24 23:27:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 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 18 [2023-12-24 23:27:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:29,062 INFO L225 Difference]: With dead ends: 158 [2023-12-24 23:27:29,062 INFO L226 Difference]: Without dead ends: 150 [2023-12-24 23:27:29,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2682 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2198, Invalid=5812, Unknown=0, NotChecked=0, Total=8010 [2023-12-24 23:27:29,064 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 407 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:29,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 176 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-24 23:27:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 73. [2023-12-24 23:27:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 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) [2023-12-24 23:27:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2023-12-24 23:27:29,103 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 18 [2023-12-24 23:27:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2023-12-24 23:27:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2023-12-24 23:27:29,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 23:27:29,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:29,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:29,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:29,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:29,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2026879586, now seen corresponding path program 7 times [2023-12-24 23:27:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883201694] [2023-12-24 23:27:29,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:27:29,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:29,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:29,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:29,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 23:27:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:27:29,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 23:27:29,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:27:29,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:27:29,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883201694] [2023-12-24 23:27:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883201694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:29,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:29,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-24 23:27:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410223857] [2023-12-24 23:27:29,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:29,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:27:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:27:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:27:29,465 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:30,353 INFO L93 Difference]: Finished difference Result 138 states and 176 transitions. [2023-12-24 23:27:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-24 23:27:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 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 19 [2023-12-24 23:27:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:30,354 INFO L225 Difference]: With dead ends: 138 [2023-12-24 23:27:30,354 INFO L226 Difference]: Without dead ends: 123 [2023-12-24 23:27:30,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=929, Invalid=3901, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 23:27:30,356 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 195 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:30,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 77 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:27:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-24 23:27:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2023-12-24 23:27:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 88 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2023-12-24 23:27:30,378 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 19 [2023-12-24 23:27:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:30,378 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2023-12-24 23:27:30,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2023-12-24 23:27:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 23:27:30,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:30,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:30,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:30,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:30,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:30,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:30,581 INFO L85 PathProgramCache]: Analyzing trace with hash 39467650, now seen corresponding path program 8 times [2023-12-24 23:27:30,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511432402] [2023-12-24 23:27:30,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:27:30,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:30,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:30,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:30,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 23:27:30,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:27:30,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:30,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 23:27:30,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:27:30,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:27:31,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511432402] [2023-12-24 23:27:31,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511432402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:31,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:31,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 23:27:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770971787] [2023-12-24 23:27:31,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 23:27:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 23:27:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:27:31,050 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:31,453 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2023-12-24 23:27:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 23:27:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2023-12-24 23:27:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:31,454 INFO L225 Difference]: With dead ends: 143 [2023-12-24 23:27:31,454 INFO L226 Difference]: Without dead ends: 117 [2023-12-24 23:27:31,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 23:27:31,455 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:31,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 120 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:27:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-24 23:27:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2023-12-24 23:27:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-24 23:27:31,476 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 20 [2023-12-24 23:27:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:31,476 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-24 23:27:31,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-24 23:27:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 23:27:31,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:31,476 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:31,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:31,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:31,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:31,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1089121181, now seen corresponding path program 9 times [2023-12-24 23:27:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:31,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815382571] [2023-12-24 23:27:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:27:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:31,681 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:31,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 23:27:31,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-24 23:27:31,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:31,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 23:27:31,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:31,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:27:32,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815382571] [2023-12-24 23:27:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815382571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:32,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 23:27:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464153391] [2023-12-24 23:27:32,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 23:27:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 23:27:32,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2023-12-24 23:27:32,003 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 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) [2023-12-24 23:27:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:34,808 INFO L93 Difference]: Finished difference Result 196 states and 271 transitions. [2023-12-24 23:27:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-24 23:27:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 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 21 [2023-12-24 23:27:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:34,809 INFO L225 Difference]: With dead ends: 196 [2023-12-24 23:27:34,809 INFO L226 Difference]: Without dead ends: 177 [2023-12-24 23:27:34,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6119 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4078, Invalid=12952, Unknown=0, NotChecked=0, Total=17030 [2023-12-24 23:27:34,813 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 664 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:34,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 180 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:27:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-24 23:27:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2023-12-24 23:27:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3478260869565217) internal successors, (124), 92 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2023-12-24 23:27:34,844 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 21 [2023-12-24 23:27:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:34,844 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2023-12-24 23:27:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 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) [2023-12-24 23:27:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2023-12-24 23:27:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:27:34,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:34,844 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:34,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:35,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:35,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:35,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -920435760, now seen corresponding path program 10 times [2023-12-24 23:27:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265154692] [2023-12-24 23:27:35,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:27:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:35,048 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:35,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 23:27:35,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:27:35,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:35,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 23:27:35,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-24 23:27:35,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-24 23:27:35,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265154692] [2023-12-24 23:27:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265154692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:35,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 23:27:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65459490] [2023-12-24 23:27:35,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:27:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:27:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:27:35,292 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:36,860 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2023-12-24 23:27:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-24 23:27:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 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 22 [2023-12-24 23:27:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:36,862 INFO L225 Difference]: With dead ends: 181 [2023-12-24 23:27:36,862 INFO L226 Difference]: Without dead ends: 165 [2023-12-24 23:27:36,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2522 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1605, Invalid=7325, Unknown=0, NotChecked=0, Total=8930 [2023-12-24 23:27:36,864 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 278 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:36,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 84 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:27:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-24 23:27:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2023-12-24 23:27:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 119 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2023-12-24 23:27:36,918 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 22 [2023-12-24 23:27:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:36,918 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2023-12-24 23:27:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2023-12-24 23:27:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:27:36,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:36,919 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:36,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:37,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:37,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:37,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 493700754, now seen corresponding path program 11 times [2023-12-24 23:27:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960358915] [2023-12-24 23:27:37,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:27:37,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:37,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:37,123 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:37,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 23:27:37,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-24 23:27:37,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:37,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 23:27:37,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:37,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:37,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:37,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960358915] [2023-12-24 23:27:37,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960358915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:37,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:37,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 23:27:37,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454006267] [2023-12-24 23:27:37,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:37,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 23:27:37,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 23:27:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-12-24 23:27:37,810 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 30 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:39,129 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2023-12-24 23:27:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 23:27:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 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 23 [2023-12-24 23:27:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:39,130 INFO L225 Difference]: With dead ends: 195 [2023-12-24 23:27:39,131 INFO L226 Difference]: Without dead ends: 163 [2023-12-24 23:27:39,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=381, Invalid=2699, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 23:27:39,132 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 100 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:39,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 134 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-24 23:27:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 114. [2023-12-24 23:27:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 113 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2023-12-24 23:27:39,173 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 23 [2023-12-24 23:27:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2023-12-24 23:27:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2023-12-24 23:27:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-24 23:27:39,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:39,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:39,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-24 23:27:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:39,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash 605681698, now seen corresponding path program 12 times [2023-12-24 23:27:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539769040] [2023-12-24 23:27:39,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:27:39,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:39,378 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:39,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 23:27:39,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-24 23:27:39,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:39,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 23:27:39,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-24 23:27:39,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-24 23:27:40,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539769040] [2023-12-24 23:27:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539769040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:40,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:40,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-24 23:27:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305461909] [2023-12-24 23:27:40,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:40,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 23:27:40,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 23:27:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:27:40,050 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 33 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:40,962 INFO L93 Difference]: Finished difference Result 231 states and 297 transitions. [2023-12-24 23:27:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-24 23:27:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 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 25 [2023-12-24 23:27:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:40,963 INFO L225 Difference]: With dead ends: 231 [2023-12-24 23:27:40,963 INFO L226 Difference]: Without dead ends: 193 [2023-12-24 23:27:40,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=664, Invalid=3118, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 23:27:40,965 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 99 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:40,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 204 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-24 23:27:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 107. [2023-12-24 23:27:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3113207547169812) internal successors, (139), 106 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2023-12-24 23:27:41,009 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 25 [2023-12-24 23:27:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:41,009 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2023-12-24 23:27:41,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2023-12-24 23:27:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 23:27:41,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:41,009 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:41,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-24 23:27:41,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:41,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:41,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1728641615, now seen corresponding path program 13 times [2023-12-24 23:27:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758539015] [2023-12-24 23:27:41,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:27:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:41,212 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 23:27:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:27:41,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 23:27:41,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:27:41,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:27:41,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758539015] [2023-12-24 23:27:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758539015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:41,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:41,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 23:27:41,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074974782] [2023-12-24 23:27:41,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:41,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 23:27:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:41,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 23:27:41,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 23:27:41,688 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 36 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:48,053 INFO L93 Difference]: Finished difference Result 282 states and 410 transitions. [2023-12-24 23:27:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-12-24 23:27:48,054 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2023-12-24 23:27:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:48,054 INFO L225 Difference]: With dead ends: 282 [2023-12-24 23:27:48,055 INFO L226 Difference]: Without dead ends: 262 [2023-12-24 23:27:48,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16080 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9072, Invalid=32340, Unknown=0, NotChecked=0, Total=41412 [2023-12-24 23:27:48,058 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1302 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:48,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 228 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:27:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-24 23:27:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 131. [2023-12-24 23:27:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.3384615384615384) internal successors, (174), 130 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-12-24 23:27:48,125 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 26 [2023-12-24 23:27:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:48,125 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-12-24 23:27:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-12-24 23:27:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:27:48,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:48,126 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:48,133 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 [2023-12-24 23:27:48,328 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 [2023-12-24 23:27:48,329 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:48,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 365870162, now seen corresponding path program 14 times [2023-12-24 23:27:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646204405] [2023-12-24 23:27:48,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:27:48,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:48,331 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) [2023-12-24 23:27:48,332 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 [2023-12-24 23:27:48,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:27:48,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:48,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 23:27:48,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:27:48,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:27:48,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646204405] [2023-12-24 23:27:48,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646204405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:48,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:48,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 23:27:48,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652667934] [2023-12-24 23:27:48,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 23:27:48,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 23:27:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-12-24 23:27:48,674 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:51,759 INFO L93 Difference]: Finished difference Result 253 states and 316 transitions. [2023-12-24 23:27:51,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-24 23:27:51,759 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 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 27 [2023-12-24 23:27:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:51,760 INFO L225 Difference]: With dead ends: 253 [2023-12-24 23:27:51,760 INFO L226 Difference]: Without dead ends: 235 [2023-12-24 23:27:51,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5656 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3184, Invalid=15176, Unknown=0, NotChecked=0, Total=18360 [2023-12-24 23:27:51,762 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 479 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:51,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 127 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-24 23:27:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 161. [2023-12-24 23:27:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.3) internal successors, (208), 160 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) [2023-12-24 23:27:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2023-12-24 23:27:51,839 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 27 [2023-12-24 23:27:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:51,839 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2023-12-24 23:27:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:51,839 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2023-12-24 23:27:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-24 23:27:51,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:51,840 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:51,842 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 [2023-12-24 23:27:52,042 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 [2023-12-24 23:27:52,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 5440530, now seen corresponding path program 15 times [2023-12-24 23:27:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838924471] [2023-12-24 23:27:52,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:27:52,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:52,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:52,044 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 23:27:52,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-24 23:27:52,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:52,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:27:52,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:27:52,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:27:52,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838924471] [2023-12-24 23:27:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838924471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:52,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2023-12-24 23:27:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295686099] [2023-12-24 23:27:52,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 23:27:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 23:27:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:27:52,878 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:53,840 INFO L93 Difference]: Finished difference Result 313 states and 415 transitions. [2023-12-24 23:27:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 23:27:53,841 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 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 29 [2023-12-24 23:27:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:53,842 INFO L225 Difference]: With dead ends: 313 [2023-12-24 23:27:53,842 INFO L226 Difference]: Without dead ends: 277 [2023-12-24 23:27:53,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=634, Invalid=3026, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 23:27:53,843 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 109 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:53,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 259 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-24 23:27:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 147. [2023-12-24 23:27:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 146 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 191 transitions. [2023-12-24 23:27:53,921 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 191 transitions. Word has length 29 [2023-12-24 23:27:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:53,921 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 191 transitions. [2023-12-24 23:27:53,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 191 transitions. [2023-12-24 23:27:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 23:27:53,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:53,922 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:53,925 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 (19)] Forceful destruction successful, exit code 0 [2023-12-24 23:27:54,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:54,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:54,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1494478206, now seen corresponding path program 16 times [2023-12-24 23:27:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757974825] [2023-12-24 23:27:54,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:27:54,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:54,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:54,127 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:54,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 23:27:54,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:27:54,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:54,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 23:27:54,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:27:54,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:27:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:27:54,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:27:54,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757974825] [2023-12-24 23:27:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757974825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:27:54,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:27:54,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 23:27:54,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163671812] [2023-12-24 23:27:54,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:27:54,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 23:27:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:27:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 23:27:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 23:27:54,567 INFO L87 Difference]: Start difference. First operand 147 states and 191 transitions. Second operand has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:27:59,096 INFO L93 Difference]: Finished difference Result 294 states and 367 transitions. [2023-12-24 23:27:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-24 23:27:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 23:27:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:27:59,097 INFO L225 Difference]: With dead ends: 294 [2023-12-24 23:27:59,097 INFO L226 Difference]: Without dead ends: 267 [2023-12-24 23:27:59,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9077 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4664, Invalid=23392, Unknown=0, NotChecked=0, Total=28056 [2023-12-24 23:27:59,099 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 674 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:27:59,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 71 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:27:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-24 23:27:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 173. [2023-12-24 23:27:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.2848837209302326) internal successors, (221), 172 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 221 transitions. [2023-12-24 23:27:59,207 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 221 transitions. Word has length 30 [2023-12-24 23:27:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:27:59,207 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 221 transitions. [2023-12-24 23:27:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:27:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 221 transitions. [2023-12-24 23:27:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:27:59,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:27:59,208 INFO L195 NwaCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:27:59,210 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 [2023-12-24 23:27:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:59,409 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:27:59,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:27:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -128508381, now seen corresponding path program 3 times [2023-12-24 23:27:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:27:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819478049] [2023-12-24 23:27:59,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:27:59,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:27:59,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:27:59,411 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:27:59,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 23:27:59,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-24 23:27:59,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:27:59,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:27:59,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:27:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:27:59,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:28:00,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819478049] [2023-12-24 23:28:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819478049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:00,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:00,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-24 23:28:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348364759] [2023-12-24 23:28:00,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 23:28:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 23:28:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 23:28:00,383 INFO L87 Difference]: Start difference. First operand 173 states and 221 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:28:06,674 INFO L93 Difference]: Finished difference Result 427 states and 621 transitions. [2023-12-24 23:28:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-24 23:28:06,675 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 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 31 [2023-12-24 23:28:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:28:06,676 INFO L225 Difference]: With dead ends: 427 [2023-12-24 23:28:06,676 INFO L226 Difference]: Without dead ends: 413 [2023-12-24 23:28:06,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4899 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5963, Invalid=12943, Unknown=0, NotChecked=0, Total=18906 [2023-12-24 23:28:06,677 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2640 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:28:06,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 877 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 23:28:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-24 23:28:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 237. [2023-12-24 23:28:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.305084745762712) internal successors, (308), 236 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 308 transitions. [2023-12-24 23:28:06,842 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 308 transitions. Word has length 31 [2023-12-24 23:28:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:28:06,842 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 308 transitions. [2023-12-24 23:28:06,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 308 transitions. [2023-12-24 23:28:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-24 23:28:06,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:28:06,843 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:28:06,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 23:28:07,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:07,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:28:07,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:28:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2115600766, now seen corresponding path program 17 times [2023-12-24 23:28:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:28:07,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403971848] [2023-12-24 23:28:07,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:28:07,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:28:07,047 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:28:07,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 23:28:07,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 23:28:07,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:28:07,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 23:28:07,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:28:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:28:07,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:28:08,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403971848] [2023-12-24 23:28:08,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403971848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:08,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:08,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2023-12-24 23:28:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478090014] [2023-12-24 23:28:08,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-24 23:28:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-24 23:28:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 23:28:08,048 INFO L87 Difference]: Start difference. First operand 237 states and 308 transitions. Second operand has 41 states, 41 states have (on average 1.146341463414634) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:28:09,537 INFO L93 Difference]: Finished difference Result 492 states and 634 transitions. [2023-12-24 23:28:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-24 23:28:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.146341463414634) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2023-12-24 23:28:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:28:09,539 INFO L225 Difference]: With dead ends: 492 [2023-12-24 23:28:09,539 INFO L226 Difference]: Without dead ends: 452 [2023-12-24 23:28:09,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=774, Invalid=3782, Unknown=0, NotChecked=0, Total=4556 [2023-12-24 23:28:09,540 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 144 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:28:09,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 290 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:28:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-24 23:28:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 221. [2023-12-24 23:28:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.3136363636363637) internal successors, (289), 220 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 289 transitions. [2023-12-24 23:28:09,702 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 289 transitions. Word has length 32 [2023-12-24 23:28:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:28:09,702 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 289 transitions. [2023-12-24 23:28:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.146341463414634) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 289 transitions. [2023-12-24 23:28:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 23:28:09,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:28:09,703 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:28:09,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 23:28:09,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:09,904 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:28:09,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:28:09,904 INFO L85 PathProgramCache]: Analyzing trace with hash 992522706, now seen corresponding path program 18 times [2023-12-24 23:28:09,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:28:09,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295272875] [2023-12-24 23:28:09,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:28:09,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:09,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:28:09,905 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) [2023-12-24 23:28:09,906 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 [2023-12-24 23:28:09,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-24 23:28:09,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:28:09,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 23:28:09,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:28:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:28:10,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:28:11,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295272875] [2023-12-24 23:28:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295272875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:11,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2023-12-24 23:28:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573744783] [2023-12-24 23:28:11,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 23:28:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 23:28:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1752, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 23:28:11,103 INFO L87 Difference]: Start difference. First operand 221 states and 289 transitions. Second operand has 45 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:28:13,430 INFO L93 Difference]: Finished difference Result 558 states and 720 transitions. [2023-12-24 23:28:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-24 23:28:13,432 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 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 33 [2023-12-24 23:28:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:28:13,433 INFO L225 Difference]: With dead ends: 558 [2023-12-24 23:28:13,433 INFO L226 Difference]: Without dead ends: 496 [2023-12-24 23:28:13,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1486, Invalid=7826, Unknown=0, NotChecked=0, Total=9312 [2023-12-24 23:28:13,434 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 183 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:28:13,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 318 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:28:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-24 23:28:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2023-12-24 23:28:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3175355450236967) internal successors, (278), 211 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 278 transitions. [2023-12-24 23:28:13,605 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 278 transitions. Word has length 33 [2023-12-24 23:28:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:28:13,605 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 278 transitions. [2023-12-24 23:28:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 278 transitions. [2023-12-24 23:28:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 23:28:13,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:28:13,605 INFO L195 NwaCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:28:13,610 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 [2023-12-24 23:28:13,806 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 [2023-12-24 23:28:13,806 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:28:13,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:28:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1078629457, now seen corresponding path program 19 times [2023-12-24 23:28:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:28:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777826790] [2023-12-24 23:28:13,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:28:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:28:13,808 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) [2023-12-24 23:28:13,809 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 [2023-12-24 23:28:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:28:13,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:28:13,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:28:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:28:14,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:28:14,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:14,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777826790] [2023-12-24 23:28:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777826790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:14,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2023-12-24 23:28:14,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337414074] [2023-12-24 23:28:14,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-24 23:28:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-24 23:28:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=2344, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 23:28:14,868 INFO L87 Difference]: Start difference. First operand 212 states and 278 transitions. Second operand has 56 states, 56 states have (on average 1.125) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:28:28,772 INFO L93 Difference]: Finished difference Result 428 states and 616 transitions. [2023-12-24 23:28:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-12-24 23:28:28,772 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.125) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-24 23:28:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:28:28,794 INFO L225 Difference]: With dead ends: 428 [2023-12-24 23:28:28,794 INFO L226 Difference]: Without dead ends: 416 [2023-12-24 23:28:28,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23917 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=17096, Invalid=44160, Unknown=0, NotChecked=0, Total=61256 [2023-12-24 23:28:28,800 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 3474 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 1833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1833 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:28:28,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 919 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1833 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 23:28:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-12-24 23:28:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 218. [2023-12-24 23:28:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3087557603686637) internal successors, (284), 217 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 284 transitions. [2023-12-24 23:28:28,998 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 284 transitions. Word has length 34 [2023-12-24 23:28:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:28:28,998 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 284 transitions. [2023-12-24 23:28:28,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.125) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 284 transitions. [2023-12-24 23:28:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:28:28,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:28:28,999 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:28:29,004 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 [2023-12-24 23:28:29,201 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 [2023-12-24 23:28:29,202 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:28:29,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:28:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -829888606, now seen corresponding path program 20 times [2023-12-24 23:28:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:28:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971183745] [2023-12-24 23:28:29,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:28:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:28:29,203 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) [2023-12-24 23:28:29,204 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 [2023-12-24 23:28:29,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:28:29,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:28:29,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:28:29,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:28:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-24 23:28:29,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-24 23:28:29,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971183745] [2023-12-24 23:28:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971183745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:29,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 23:28:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146033054] [2023-12-24 23:28:29,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 23:28:29,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 23:28:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 23:28:29,770 INFO L87 Difference]: Start difference. First operand 218 states and 284 transitions. Second operand has 40 states, 40 states have (on average 1.175) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:28:37,781 INFO L93 Difference]: Finished difference Result 425 states and 522 transitions. [2023-12-24 23:28:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-12-24 23:28:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.175) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2023-12-24 23:28:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:28:37,783 INFO L225 Difference]: With dead ends: 425 [2023-12-24 23:28:37,783 INFO L226 Difference]: Without dead ends: 399 [2023-12-24 23:28:37,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16400 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=7565, Invalid=39307, Unknown=0, NotChecked=0, Total=46872 [2023-12-24 23:28:37,785 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 932 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:28:37,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 113 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:28:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-24 23:28:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 249. [2023-12-24 23:28:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 248 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 319 transitions. [2023-12-24 23:28:38,025 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 319 transitions. Word has length 35 [2023-12-24 23:28:38,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:28:38,026 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 319 transitions. [2023-12-24 23:28:38,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.175) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:28:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 319 transitions. [2023-12-24 23:28:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:28:38,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:28:38,027 INFO L195 NwaCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:28:38,032 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 [2023-12-24 23:28:38,229 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 [2023-12-24 23:28:38,230 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:28:38,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:28:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash 118543203, now seen corresponding path program 21 times [2023-12-24 23:28:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:28:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693390012] [2023-12-24 23:28:38,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:28:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:28:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:28:38,232 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) [2023-12-24 23:28:38,233 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 [2023-12-24 23:28:38,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-12-24 23:28:38,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:28:38,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 23:28:38,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:28:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:28:38,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:28:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:28:39,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:28:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693390012] [2023-12-24 23:28:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693390012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:28:39,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:28:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-12-24 23:28:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666303260] [2023-12-24 23:28:39,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:28:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-24 23:28:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:28:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-24 23:28:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=799, Invalid=2741, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 23:28:39,466 INFO L87 Difference]: Start difference. First operand 249 states and 319 transitions. Second operand has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:29:02,187 INFO L93 Difference]: Finished difference Result 564 states and 764 transitions. [2023-12-24 23:29:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-12-24 23:29:02,187 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-24 23:29:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:29:02,189 INFO L225 Difference]: With dead ends: 564 [2023-12-24 23:29:02,189 INFO L226 Difference]: Without dead ends: 529 [2023-12-24 23:29:02,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49833 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=29038, Invalid=90332, Unknown=0, NotChecked=0, Total=119370 [2023-12-24 23:29:02,192 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3778 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 2248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 5064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2248 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:29:02,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 1028 Invalid, 5064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2248 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 23:29:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-24 23:29:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 263. [2023-12-24 23:29:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.2938931297709924) internal successors, (339), 262 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 339 transitions. [2023-12-24 23:29:02,446 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 339 transitions. Word has length 37 [2023-12-24 23:29:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:29:02,446 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 339 transitions. [2023-12-24 23:29:02,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 339 transitions. [2023-12-24 23:29:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 23:29:02,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:29:02,446 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:29:02,450 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 [2023-12-24 23:29:02,649 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 [2023-12-24 23:29:02,650 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:29:02,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:29:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -524046206, now seen corresponding path program 22 times [2023-12-24 23:29:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:29:02,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305468218] [2023-12-24 23:29:02,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:29:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:29:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:29:02,651 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) [2023-12-24 23:29:02,652 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 (27)] Waiting until timeout for monitored process [2023-12-24 23:29:02,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:29:02,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:29:02,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 23:29:02,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:29:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:29:03,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:29:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:29:04,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:29:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305468218] [2023-12-24 23:29:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305468218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:29:04,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:29:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-24 23:29:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921626137] [2023-12-24 23:29:04,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:29:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-24 23:29:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:29:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-24 23:29:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2217, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 23:29:04,412 INFO L87 Difference]: Start difference. First operand 263 states and 339 transitions. Second operand has 50 states, 50 states have (on average 1.5) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:29:10,875 INFO L93 Difference]: Finished difference Result 638 states and 749 transitions. [2023-12-24 23:29:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-24 23:29:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.5) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-24 23:29:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:29:10,877 INFO L225 Difference]: With dead ends: 638 [2023-12-24 23:29:10,877 INFO L226 Difference]: Without dead ends: 592 [2023-12-24 23:29:10,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=886, Invalid=7670, Unknown=0, NotChecked=0, Total=8556 [2023-12-24 23:29:10,878 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 198 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:29:10,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 149 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 23:29:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-12-24 23:29:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 245. [2023-12-24 23:29:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.3032786885245902) internal successors, (318), 244 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2023-12-24 23:29:11,142 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 38 [2023-12-24 23:29:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:29:11,142 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2023-12-24 23:29:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.5) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2023-12-24 23:29:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 23:29:11,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:29:11,143 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:29:11,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-24 23:29:11,343 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 [2023-12-24 23:29:11,344 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:29:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:29:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1872483280, now seen corresponding path program 23 times [2023-12-24 23:29:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:29:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572024903] [2023-12-24 23:29:11,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:29:11,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:29:11,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:29:11,345 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) [2023-12-24 23:29:11,346 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 [2023-12-24 23:29:11,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-24 23:29:11,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:29:11,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:29:11,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:29:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:29:11,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:29:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-24 23:29:12,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:29:12,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572024903] [2023-12-24 23:29:12,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572024903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:29:12,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:29:12,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-12-24 23:29:12,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107005773] [2023-12-24 23:29:12,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:29:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 23:29:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:29:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 23:29:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2460, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 23:29:12,897 INFO L87 Difference]: Start difference. First operand 245 states and 318 transitions. Second operand has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:17,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:29:17,178 INFO L93 Difference]: Finished difference Result 701 states and 896 transitions. [2023-12-24 23:29:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-24 23:29:17,179 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-24 23:29:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:29:17,180 INFO L225 Difference]: With dead ends: 701 [2023-12-24 23:29:17,180 INFO L226 Difference]: Without dead ends: 615 [2023-12-24 23:29:17,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2421, Invalid=13835, Unknown=0, NotChecked=0, Total=16256 [2023-12-24 23:29:17,181 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 231 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:29:17,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 472 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:29:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-24 23:29:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 235. [2023-12-24 23:29:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3076923076923077) internal successors, (306), 234 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 306 transitions. [2023-12-24 23:29:17,444 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 306 transitions. Word has length 38 [2023-12-24 23:29:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:29:17,444 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 306 transitions. [2023-12-24 23:29:17,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 306 transitions. [2023-12-24 23:29:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-24 23:29:17,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:29:17,445 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:29:17,448 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 (28)] Ended with exit code 0 [2023-12-24 23:29:17,645 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 [2023-12-24 23:29:17,645 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:29:17,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:29:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -457274750, now seen corresponding path program 24 times [2023-12-24 23:29:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:29:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117251035] [2023-12-24 23:29:17,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:29:17,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:29:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:29:17,647 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) [2023-12-24 23:29:17,647 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 [2023-12-24 23:29:17,707 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 23:29:17,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:29:17,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:29:17,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:29:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-24 23:29:17,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:29:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-24 23:29:18,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:29:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117251035] [2023-12-24 23:29:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117251035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:29:18,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:29:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-12-24 23:29:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850729527] [2023-12-24 23:29:18,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:29:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 23:29:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:29:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 23:29:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1745, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 23:29:18,385 INFO L87 Difference]: Start difference. First operand 235 states and 306 transitions. Second operand has 46 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:29:31,119 INFO L93 Difference]: Finished difference Result 462 states and 568 transitions. [2023-12-24 23:29:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-24 23:29:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 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 40 [2023-12-24 23:29:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:29:31,120 INFO L225 Difference]: With dead ends: 462 [2023-12-24 23:29:31,120 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 23:29:31,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26791 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=11629, Invalid=62083, Unknown=0, NotChecked=0, Total=73712 [2023-12-24 23:29:31,123 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1454 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:29:31,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 159 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:29:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 23:29:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 271. [2023-12-24 23:29:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.2740740740740741) internal successors, (344), 270 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 344 transitions. [2023-12-24 23:29:31,435 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 344 transitions. Word has length 40 [2023-12-24 23:29:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:29:31,435 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 344 transitions. [2023-12-24 23:29:31,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:29:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 344 transitions. [2023-12-24 23:29:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-24 23:29:31,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:29:31,435 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:29:31,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 23:29:31,636 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 [2023-12-24 23:29:31,636 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:29:31,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:29:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -868825455, now seen corresponding path program 25 times [2023-12-24 23:29:31,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:29:31,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378562694] [2023-12-24 23:29:31,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:29:31,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:29:31,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:29:31,638 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) [2023-12-24 23:29:31,639 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 [2023-12-24 23:29:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:29:31,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 23:29:31,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:29:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:29:32,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:29:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:29:33,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:29:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378562694] [2023-12-24 23:29:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378562694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:29:33,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:29:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2023-12-24 23:29:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183638860] [2023-12-24 23:29:33,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:29:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-24 23:29:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:29:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-24 23:29:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=866, Invalid=3166, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 23:29:33,018 INFO L87 Difference]: Start difference. First operand 271 states and 344 transitions. Second operand has 64 states, 64 states have (on average 1.109375) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:30:06,285 INFO L93 Difference]: Finished difference Result 660 states and 872 transitions. [2023-12-24 23:30:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 401 states. [2023-12-24 23:30:06,286 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.109375) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-24 23:30:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:30:06,287 INFO L225 Difference]: With dead ends: 660 [2023-12-24 23:30:06,287 INFO L226 Difference]: Without dead ends: 623 [2023-12-24 23:30:06,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80962 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=41602, Invalid=147188, Unknown=0, NotChecked=0, Total=188790 [2023-12-24 23:30:06,293 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 5146 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 3189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 6367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3189 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:30:06,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5146 Valid, 1051 Invalid, 6367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3189 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 23:30:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-24 23:30:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 297. [2023-12-24 23:30:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.2736486486486487) internal successors, (377), 296 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 377 transitions. [2023-12-24 23:30:06,683 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 377 transitions. Word has length 40 [2023-12-24 23:30:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:30:06,684 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 377 transitions. [2023-12-24 23:30:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.109375) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 377 transitions. [2023-12-24 23:30:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-24 23:30:06,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:30:06,684 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:30:06,689 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 [2023-12-24 23:30:06,885 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 [2023-12-24 23:30:06,885 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:30:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:30:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 733220114, now seen corresponding path program 26 times [2023-12-24 23:30:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:30:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439819] [2023-12-24 23:30:06,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:30:06,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:30:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:30:06,886 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) [2023-12-24 23:30:06,887 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 [2023-12-24 23:30:06,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:30:06,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:30:06,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 23:30:06,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:30:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-24 23:30:07,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:30:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-24 23:30:07,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:30:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439819] [2023-12-24 23:30:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:30:07,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:30:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-24 23:30:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501418823] [2023-12-24 23:30:07,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:30:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-24 23:30:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:30:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-24 23:30:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2073, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 23:30:07,748 INFO L87 Difference]: Start difference. First operand 297 states and 377 transitions. Second operand has 50 states, 50 states have (on average 1.14) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:30:26,433 INFO L93 Difference]: Finished difference Result 569 states and 688 transitions. [2023-12-24 23:30:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2023-12-24 23:30:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.14) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-24 23:30:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:30:26,435 INFO L225 Difference]: With dead ends: 569 [2023-12-24 23:30:26,435 INFO L226 Difference]: Without dead ends: 533 [2023-12-24 23:30:26,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44762 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=18492, Invalid=98814, Unknown=0, NotChecked=0, Total=117306 [2023-12-24 23:30:26,439 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1967 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 979 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 979 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:30:26,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 180 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [979 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:30:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-24 23:30:26,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 341. [2023-12-24 23:30:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.2529411764705882) internal successors, (426), 340 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 426 transitions. [2023-12-24 23:30:26,908 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 426 transitions. Word has length 43 [2023-12-24 23:30:26,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:30:26,908 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 426 transitions. [2023-12-24 23:30:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.14) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 426 transitions. [2023-12-24 23:30:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-24 23:30:26,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:30:26,909 INFO L195 NwaCegarLoop]: trace histogram [27, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:30:26,913 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 [2023-12-24 23:30:27,113 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 [2023-12-24 23:30:27,114 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:30:27,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:30:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash -684033885, now seen corresponding path program 27 times [2023-12-24 23:30:27,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:30:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392282748] [2023-12-24 23:30:27,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:30:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:30:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:30:27,116 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) [2023-12-24 23:30:27,116 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 [2023-12-24 23:30:27,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-24 23:30:27,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:30:27,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 23:30:27,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:30:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:30:27,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:30:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:30:28,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:30:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392282748] [2023-12-24 23:30:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392282748] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:30:28,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:30:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-24 23:30:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671872375] [2023-12-24 23:30:28,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:30:28,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 23:30:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:30:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 23:30:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=2414, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 23:30:28,314 INFO L87 Difference]: Start difference. First operand 341 states and 426 transitions. Second operand has 58 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:30:43,844 INFO L93 Difference]: Finished difference Result 642 states and 825 transitions. [2023-12-24 23:30:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2023-12-24 23:30:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-24 23:30:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:30:43,846 INFO L225 Difference]: With dead ends: 642 [2023-12-24 23:30:43,846 INFO L226 Difference]: Without dead ends: 637 [2023-12-24 23:30:43,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9909 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=12181, Invalid=27221, Unknown=0, NotChecked=0, Total=39402 [2023-12-24 23:30:43,848 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2503 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 2243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 4173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2243 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:30:43,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 1449 Invalid, 4173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2243 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 23:30:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-24 23:30:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 343. [2023-12-24 23:30:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.2660818713450293) internal successors, (433), 342 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 433 transitions. [2023-12-24 23:30:44,329 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 433 transitions. Word has length 43 [2023-12-24 23:30:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:30:44,330 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 433 transitions. [2023-12-24 23:30:44,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 433 transitions. [2023-12-24 23:30:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-24 23:30:44,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:30:44,330 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:30:44,340 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 [2023-12-24 23:30:44,533 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 [2023-12-24 23:30:44,534 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:30:44,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:30:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1453309310, now seen corresponding path program 28 times [2023-12-24 23:30:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:30:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466835978] [2023-12-24 23:30:44,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:30:44,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:30:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:30:44,535 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) [2023-12-24 23:30:44,536 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 [2023-12-24 23:30:44,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:30:44,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:30:44,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 23:30:44,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:30:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:30:45,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:30:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:30:46,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:30:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466835978] [2023-12-24 23:30:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466835978] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:30:46,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:30:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-24 23:30:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131821637] [2023-12-24 23:30:46,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:30:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 23:30:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:30:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 23:30:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3007, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 23:30:46,843 INFO L87 Difference]: Start difference. First operand 343 states and 433 transitions. Second operand has 58 states, 58 states have (on average 1.5) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:30:55,683 INFO L93 Difference]: Finished difference Result 783 states and 915 transitions. [2023-12-24 23:30:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-24 23:30:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-24 23:30:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:30:55,686 INFO L225 Difference]: With dead ends: 783 [2023-12-24 23:30:55,686 INFO L226 Difference]: Without dead ends: 730 [2023-12-24 23:30:55,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1109, Invalid=9603, Unknown=0, NotChecked=0, Total=10712 [2023-12-24 23:30:55,687 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 207 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:30:55,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 166 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 23:30:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-24 23:30:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 322. [2023-12-24 23:30:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.2741433021806854) internal successors, (409), 321 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 409 transitions. [2023-12-24 23:30:56,157 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 409 transitions. Word has length 44 [2023-12-24 23:30:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:30:56,158 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 409 transitions. [2023-12-24 23:30:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:30:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 409 transitions. [2023-12-24 23:30:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-24 23:30:56,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:30:56,158 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:30:56,162 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 [2023-12-24 23:30:56,362 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 [2023-12-24 23:30:56,362 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:30:56,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:30:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -420708943, now seen corresponding path program 29 times [2023-12-24 23:30:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:30:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433082097] [2023-12-24 23:30:56,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:30:56,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:30:56,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:30:56,363 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) [2023-12-24 23:30:56,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 23:30:56,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-24 23:30:56,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:30:56,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 23:30:56,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:30:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:30:56,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:30:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 23:30:57,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:30:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433082097] [2023-12-24 23:30:57,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433082097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:30:57,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:30:57,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-12-24 23:30:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292315839] [2023-12-24 23:30:57,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:30:57,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-24 23:30:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:30:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-24 23:30:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=2588, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 23:30:57,595 INFO L87 Difference]: Start difference. First operand 322 states and 409 transitions. Second operand has 60 states, 60 states have (on average 1.35) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:31:16,701 INFO L93 Difference]: Finished difference Result 654 states and 844 transitions. [2023-12-24 23:31:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-24 23:31:16,701 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.35) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-24 23:31:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:31:16,702 INFO L225 Difference]: With dead ends: 654 [2023-12-24 23:31:16,703 INFO L226 Difference]: Without dead ends: 649 [2023-12-24 23:31:16,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13648 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=15105, Invalid=35295, Unknown=0, NotChecked=0, Total=50400 [2023-12-24 23:31:16,705 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2454 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 2326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2326 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:31:16,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 1509 Invalid, 4386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2326 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 23:31:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-24 23:31:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 338. [2023-12-24 23:31:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.2878338278931751) internal successors, (434), 337 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 434 transitions. [2023-12-24 23:31:17,270 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 434 transitions. Word has length 45 [2023-12-24 23:31:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:31:17,270 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 434 transitions. [2023-12-24 23:31:17,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.35) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 434 transitions. [2023-12-24 23:31:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-24 23:31:17,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:31:17,271 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:31:17,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 23:31:17,474 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 [2023-12-24 23:31:17,474 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:31:17,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:31:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1891601538, now seen corresponding path program 30 times [2023-12-24 23:31:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:31:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549032003] [2023-12-24 23:31:17,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:31:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:31:17,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:31:17,476 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) [2023-12-24 23:31:17,476 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 [2023-12-24 23:31:17,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-24 23:31:17,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:31:17,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 23:31:17,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:31:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-24 23:31:17,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:31:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-24 23:31:18,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:31:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549032003] [2023-12-24 23:31:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549032003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:31:18,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:31:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2023-12-24 23:31:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583976789] [2023-12-24 23:31:18,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:31:18,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-24 23:31:18,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:31:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-24 23:31:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2429, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 23:31:18,482 INFO L87 Difference]: Start difference. First operand 338 states and 434 transitions. Second operand has 54 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:31:43,007 INFO L93 Difference]: Finished difference Result 653 states and 795 transitions. [2023-12-24 23:31:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 356 states. [2023-12-24 23:31:43,007 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-24 23:31:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:31:43,009 INFO L225 Difference]: With dead ends: 653 [2023-12-24 23:31:43,009 INFO L226 Difference]: Without dead ends: 613 [2023-12-24 23:31:43,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59536 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=23637, Invalid=129635, Unknown=0, NotChecked=0, Total=153272 [2023-12-24 23:31:43,015 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2306 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 1285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1285 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:31:43,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 247 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1285 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 23:31:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-24 23:31:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 390. [2023-12-24 23:31:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.2802056555269923) internal successors, (498), 389 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 498 transitions. [2023-12-24 23:31:43,718 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 498 transitions. Word has length 46 [2023-12-24 23:31:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:31:43,718 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 498 transitions. [2023-12-24 23:31:43,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:43,718 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 498 transitions. [2023-12-24 23:31:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-24 23:31:43,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:31:43,719 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:31:43,724 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 [2023-12-24 23:31:43,919 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 [2023-12-24 23:31:43,919 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:31:43,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:31:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1770685294, now seen corresponding path program 31 times [2023-12-24 23:31:43,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:31:43,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336475726] [2023-12-24 23:31:43,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:31:43,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:31:43,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:31:43,921 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) [2023-12-24 23:31:43,922 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 [2023-12-24 23:31:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:31:44,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-24 23:31:44,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:31:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:31:44,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:31:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:31:46,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:31:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336475726] [2023-12-24 23:31:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336475726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:31:46,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:31:46,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2023-12-24 23:31:46,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012586637] [2023-12-24 23:31:46,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:31:46,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-24 23:31:46,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:31:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-24 23:31:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=3447, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 23:31:46,589 INFO L87 Difference]: Start difference. First operand 390 states and 498 transitions. Second operand has 62 states, 62 states have (on average 1.5) internal successors, (93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:31:59,134 INFO L93 Difference]: Finished difference Result 920 states and 1076 transitions. [2023-12-24 23:31:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-24 23:31:59,135 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.5) internal successors, (93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-24 23:31:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:31:59,137 INFO L225 Difference]: With dead ends: 920 [2023-12-24 23:31:59,137 INFO L226 Difference]: Without dead ends: 863 [2023-12-24 23:31:59,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1292, Invalid=11818, Unknown=0, NotChecked=0, Total=13110 [2023-12-24 23:31:59,138 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 275 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:31:59,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 188 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 23:31:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-24 23:31:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 367. [2023-12-24 23:31:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.289617486338798) internal successors, (472), 366 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 472 transitions. [2023-12-24 23:31:59,818 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 472 transitions. Word has length 47 [2023-12-24 23:31:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:31:59,818 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 472 transitions. [2023-12-24 23:31:59,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.5) internal successors, (93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:31:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 472 transitions. [2023-12-24 23:31:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-24 23:31:59,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:31:59,819 INFO L195 NwaCegarLoop]: trace histogram [29, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:31:59,823 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 [2023-12-24 23:32:00,023 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 [2023-12-24 23:32:00,023 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:32:00,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:32:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 398392867, now seen corresponding path program 32 times [2023-12-24 23:32:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:32:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855072091] [2023-12-24 23:32:00,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:32:00,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:32:00,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:32:00,025 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) [2023-12-24 23:32:00,026 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 [2023-12-24 23:32:00,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:32:00,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:32:00,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 23:32:00,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:32:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-24 23:32:00,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:32:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-24 23:32:01,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:32:01,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855072091] [2023-12-24 23:32:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855072091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:32:01,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:32:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2023-12-24 23:32:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367213567] [2023-12-24 23:32:01,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:32:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-24 23:32:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:32:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-24 23:32:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=4051, Unknown=0, NotChecked=0, Total=5112 [2023-12-24 23:32:01,744 INFO L87 Difference]: Start difference. First operand 367 states and 472 transitions. Second operand has 72 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:32:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:32:56,944 INFO L93 Difference]: Finished difference Result 874 states and 1127 transitions. [2023-12-24 23:32:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 530 states. [2023-12-24 23:32:56,944 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 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 47 [2023-12-24 23:32:56,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:32:56,946 INFO L225 Difference]: With dead ends: 874 [2023-12-24 23:32:56,946 INFO L226 Difference]: Without dead ends: 813 [2023-12-24 23:32:56,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142139 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=66217, Invalid=256975, Unknown=0, NotChecked=0, Total=323192 [2023-12-24 23:32:56,958 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7019 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 4459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7019 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 8433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4459 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:32:56,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7019 Valid, 1194 Invalid, 8433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4459 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 23:32:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-24 23:32:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 369. [2023-12-24 23:32:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.247282608695652) internal successors, (459), 368 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:32:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 459 transitions. [2023-12-24 23:32:57,678 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 459 transitions. Word has length 47 [2023-12-24 23:32:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:32:57,678 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 459 transitions. [2023-12-24 23:32:57,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:32:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 459 transitions. [2023-12-24 23:32:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-24 23:32:57,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:32:57,679 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:32:57,687 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 [2023-12-24 23:32:57,883 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 [2023-12-24 23:32:57,883 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:32:57,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:32:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2112750958, now seen corresponding path program 33 times [2023-12-24 23:32:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:32:57,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865769465] [2023-12-24 23:32:57,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:32:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:32:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:32:57,884 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) [2023-12-24 23:32:57,885 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 [2023-12-24 23:32:57,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-24 23:32:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:32:57,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 23:32:57,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:32:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 23:32:58,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:32:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 23:32:59,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:32:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865769465] [2023-12-24 23:32:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865769465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:32:59,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:32:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-12-24 23:32:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582701002] [2023-12-24 23:32:59,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:32:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 23:32:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:32:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 23:32:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2609, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 23:32:59,425 INFO L87 Difference]: Start difference. First operand 369 states and 459 transitions. Second operand has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:33:23,959 INFO L93 Difference]: Finished difference Result 1160 states and 1600 transitions. [2023-12-24 23:33:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2023-12-24 23:33:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-24 23:33:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:33:23,962 INFO L225 Difference]: With dead ends: 1160 [2023-12-24 23:33:23,962 INFO L226 Difference]: Without dead ends: 1023 [2023-12-24 23:33:23,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47613 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=18754, Invalid=109768, Unknown=0, NotChecked=0, Total=128522 [2023-12-24 23:33:23,967 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2663 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2663 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:33:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2663 Valid, 182 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 23:33:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-24 23:33:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 419. [2023-12-24 23:33:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.2488038277511961) internal successors, (522), 418 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:24,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 522 transitions. [2023-12-24 23:33:24,958 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 522 transitions. Word has length 49 [2023-12-24 23:33:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:33:24,959 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 522 transitions. [2023-12-24 23:33:24,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 522 transitions. [2023-12-24 23:33:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-24 23:33:24,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:33:24,959 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:33:24,968 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 (38)] Ended with exit code 0 [2023-12-24 23:33:25,163 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 [2023-12-24 23:33:25,163 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:33:25,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:33:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2122304382, now seen corresponding path program 34 times [2023-12-24 23:33:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:33:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793237699] [2023-12-24 23:33:25,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:33:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:33:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:33:25,165 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) [2023-12-24 23:33:25,165 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 [2023-12-24 23:33:25,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:33:25,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:33:25,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-24 23:33:25,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:33:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:33:26,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:33:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:33:28,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:33:28,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793237699] [2023-12-24 23:33:28,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793237699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:33:28,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:33:28,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2023-12-24 23:33:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99790624] [2023-12-24 23:33:28,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:33:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 23:33:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:33:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 23:33:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=3917, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 23:33:28,182 INFO L87 Difference]: Start difference. First operand 419 states and 522 transitions. Second operand has 66 states, 66 states have (on average 1.5) internal successors, (99), 65 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:33:42,610 INFO L93 Difference]: Finished difference Result 975 states and 1118 transitions. [2023-12-24 23:33:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-24 23:33:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5) internal successors, (99), 65 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2023-12-24 23:33:42,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:33:42,613 INFO L225 Difference]: With dead ends: 975 [2023-12-24 23:33:42,613 INFO L226 Difference]: Without dead ends: 915 [2023-12-24 23:33:42,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1391, Invalid=12415, Unknown=0, NotChecked=0, Total=13806 [2023-12-24 23:33:42,614 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 274 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:33:42,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 201 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 23:33:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-24 23:33:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 395. [2023-12-24 23:33:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.2563451776649746) internal successors, (495), 394 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 495 transitions. [2023-12-24 23:33:43,575 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 495 transitions. Word has length 50 [2023-12-24 23:33:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:33:43,575 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 495 transitions. [2023-12-24 23:33:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5) internal successors, (99), 65 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:33:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 495 transitions. [2023-12-24 23:33:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-24 23:33:43,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:33:43,576 INFO L195 NwaCegarLoop]: trace histogram [30, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:33:43,580 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 [2023-12-24 23:33:43,776 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 [2023-12-24 23:33:43,776 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:33:43,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:33:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1905901058, now seen corresponding path program 35 times [2023-12-24 23:33:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:33:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054016461] [2023-12-24 23:33:43,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:33:43,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:33:43,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:33:43,778 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) [2023-12-24 23:33:43,780 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 [2023-12-24 23:33:43,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-24 23:33:43,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:33:43,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 23:33:43,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:33:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-24 23:33:44,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:33:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-24 23:33:45,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:33:45,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054016461] [2023-12-24 23:33:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054016461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:33:45,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:33:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2023-12-24 23:33:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071301969] [2023-12-24 23:33:45,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:33:45,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-24 23:33:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:33:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-24 23:33:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=4850, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 23:33:45,802 INFO L87 Difference]: Start difference. First operand 395 states and 495 transitions. Second operand has 78 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 77 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:35:39,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:35:39,114 INFO L93 Difference]: Finished difference Result 3042 states and 3831 transitions. [2023-12-24 23:35:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 722 states. [2023-12-24 23:35:39,115 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 77 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2023-12-24 23:35:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:35:39,122 INFO L225 Difference]: With dead ends: 3042 [2023-12-24 23:35:39,122 INFO L226 Difference]: Without dead ends: 2991 [2023-12-24 23:35:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 764 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264351 ImplicationChecksByTransitivity, 84.7s TimeCoverageRelationStatistics Valid=108407, Invalid=477583, Unknown=0, NotChecked=0, Total=585990 [2023-12-24 23:35:39,152 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8606 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 4911 mSolverCounterSat, 6524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8606 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 11435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6524 IncrementalHoareTripleChecker+Valid, 4911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:35:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8606 Valid, 1277 Invalid, 11435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6524 Valid, 4911 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 23:35:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2023-12-24 23:35:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 427. [2023-12-24 23:35:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.2699530516431925) internal successors, (541), 426 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:35:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 541 transitions. [2023-12-24 23:35:40,276 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 541 transitions. Word has length 50 [2023-12-24 23:35:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:35:40,276 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 541 transitions. [2023-12-24 23:35:40,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 77 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:35:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 541 transitions. [2023-12-24 23:35:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-24 23:35:40,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:35:40,277 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:35:40,285 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 [2023-12-24 23:35:40,479 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 [2023-12-24 23:35:40,480 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:35:40,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:35:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1324609154, now seen corresponding path program 36 times [2023-12-24 23:35:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:35:40,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872144167] [2023-12-24 23:35:40,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:35:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:35:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:35:40,481 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) [2023-12-24 23:35:40,482 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 [2023-12-24 23:35:40,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-24 23:35:40,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:35:40,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 23:35:40,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:35:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 23:35:41,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:35:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 23:35:42,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:35:42,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872144167] [2023-12-24 23:35:42,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872144167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:35:42,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:35:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 62 [2023-12-24 23:35:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644484269] [2023-12-24 23:35:42,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:35:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-24 23:35:42,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:35:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-24 23:35:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=2991, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 23:35:42,232 INFO L87 Difference]: Start difference. First operand 427 states and 541 transitions. Second operand has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:36:12,093 INFO L93 Difference]: Finished difference Result 911 states and 1075 transitions. [2023-12-24 23:36:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2023-12-24 23:36:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2023-12-24 23:36:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:36:12,099 INFO L225 Difference]: With dead ends: 911 [2023-12-24 23:36:12,099 INFO L226 Difference]: Without dead ends: 821 [2023-12-24 23:36:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59153 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=22535, Invalid=135471, Unknown=0, NotChecked=0, Total=158006 [2023-12-24 23:36:12,106 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3292 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 4002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:36:12,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 242 Invalid, 4002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 23:36:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-24 23:36:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 485. [2023-12-24 23:36:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.2479338842975207) internal successors, (604), 484 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 604 transitions. [2023-12-24 23:36:13,517 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 604 transitions. Word has length 52 [2023-12-24 23:36:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:36:13,518 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 604 transitions. [2023-12-24 23:36:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 604 transitions. [2023-12-24 23:36:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-24 23:36:13,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:36:13,518 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:36:13,524 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 (41)] Ended with exit code 0 [2023-12-24 23:36:13,719 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 [2023-12-24 23:36:13,719 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:36:13,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:36:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2125380114, now seen corresponding path program 37 times [2023-12-24 23:36:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:36:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152286004] [2023-12-24 23:36:13,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:36:13,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:36:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:36:13,721 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) [2023-12-24 23:36:13,722 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 [2023-12-24 23:36:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:36:13,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-24 23:36:13,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:36:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:36:14,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:36:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:36:17,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:36:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152286004] [2023-12-24 23:36:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152286004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:36:17,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:36:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2023-12-24 23:36:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149558934] [2023-12-24 23:36:17,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:36:17,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-24 23:36:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:36:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-24 23:36:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=4417, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 23:36:17,169 INFO L87 Difference]: Start difference. First operand 485 states and 604 transitions. Second operand has 70 states, 70 states have (on average 1.5) internal successors, (105), 69 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:36:37,323 INFO L93 Difference]: Finished difference Result 1175 states and 1356 transitions. [2023-12-24 23:36:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-24 23:36:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5) internal successors, (105), 69 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2023-12-24 23:36:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:36:37,325 INFO L225 Difference]: With dead ends: 1175 [2023-12-24 23:36:37,325 INFO L226 Difference]: Without dead ends: 1086 [2023-12-24 23:36:37,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1619, Invalid=16203, Unknown=0, NotChecked=0, Total=17822 [2023-12-24 23:36:37,327 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 376 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:36:37,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 539 Invalid, 4550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 23:36:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-12-24 23:36:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 504. [2023-12-24 23:36:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.2405566600397615) internal successors, (624), 503 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 624 transitions. [2023-12-24 23:36:38,933 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 624 transitions. Word has length 53 [2023-12-24 23:36:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:36:38,934 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 624 transitions. [2023-12-24 23:36:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5) internal successors, (105), 69 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:36:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 624 transitions. [2023-12-24 23:36:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-24 23:36:38,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:36:38,934 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:36:38,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-24 23:36:39,138 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 [2023-12-24 23:36:39,139 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:36:39,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:36:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1453132593, now seen corresponding path program 38 times [2023-12-24 23:36:39,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:36:39,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084831719] [2023-12-24 23:36:39,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:36:39,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:36:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:36:39,140 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:36:39,141 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 (43)] Waiting until timeout for monitored process [2023-12-24 23:36:39,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:36:39,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:36:39,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 23:36:39,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:36:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 556 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:36:39,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:36:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 556 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 23:36:41,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:36:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084831719] [2023-12-24 23:36:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084831719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:36:41,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:36:41,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2023-12-24 23:36:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57720108] [2023-12-24 23:36:41,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:36:41,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-24 23:36:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:36:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-24 23:36:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1310, Invalid=5662, Unknown=0, NotChecked=0, Total=6972 [2023-12-24 23:36:41,464 INFO L87 Difference]: Start difference. First operand 504 states and 624 transitions. Second operand has 84 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:39:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:39:23,759 INFO L93 Difference]: Finished difference Result 4247 states and 5190 transitions. [2023-12-24 23:39:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 863 states. [2023-12-24 23:39:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-24 23:39:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:39:23,769 INFO L225 Difference]: With dead ends: 4247 [2023-12-24 23:39:23,769 INFO L226 Difference]: Without dead ends: 4167 [2023-12-24 23:39:23,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 909 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379413 ImplicationChecksByTransitivity, 118.2s TimeCoverageRelationStatistics Valid=147911, Invalid=681099, Unknown=0, NotChecked=0, Total=829010 [2023-12-24 23:39:23,815 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10719 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 6118 mSolverCounterSat, 8332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10719 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 14450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8332 IncrementalHoareTripleChecker+Valid, 6118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:39:23,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10719 Valid, 1492 Invalid, 14450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8332 Valid, 6118 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 23:39:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-12-24 23:39:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 509. [2023-12-24 23:39:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.2559055118110236) internal successors, (638), 508 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:39:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 638 transitions. [2023-12-24 23:39:25,503 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 638 transitions. Word has length 54 [2023-12-24 23:39:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:39:25,504 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 638 transitions. [2023-12-24 23:39:25,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:39:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 638 transitions. [2023-12-24 23:39:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 23:39:25,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:39:25,504 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:39:25,514 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 23:39:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:39:25,708 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:39:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:39:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1623115794, now seen corresponding path program 39 times [2023-12-24 23:39:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:39:25,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071818581] [2023-12-24 23:39:25,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:39:25,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:39:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:39:25,710 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:39:25,714 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 (44)] Waiting until timeout for monitored process [2023-12-24 23:39:25,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-24 23:39:25,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:39:25,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 23:39:25,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:39:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-24 23:39:26,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:39:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-24 23:39:27,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:39:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071818581] [2023-12-24 23:39:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071818581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:39:27,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:39:27,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2023-12-24 23:39:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907086706] [2023-12-24 23:39:27,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:39:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 23:39:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:39:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 23:39:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=3665, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 23:39:27,201 INFO L87 Difference]: Start difference. First operand 509 states and 638 transitions. Second operand has 66 states, 66 states have (on average 1.106060606060606) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:40:24,195 INFO L93 Difference]: Finished difference Result 1328 states and 1535 transitions. [2023-12-24 23:40:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 512 states. [2023-12-24 23:40:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.106060606060606) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2023-12-24 23:40:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:40:24,199 INFO L225 Difference]: With dead ends: 1328 [2023-12-24 23:40:24,199 INFO L226 Difference]: Without dead ends: 1276 [2023-12-24 23:40:24,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125704 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=45291, Invalid=264401, Unknown=0, NotChecked=0, Total=309692 [2023-12-24 23:40:24,209 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3772 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 2103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 4409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:40:24,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 276 Invalid, 4409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2103 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 23:40:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-12-24 23:40:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 622. [2023-12-24 23:40:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.251207729468599) internal successors, (777), 621 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 777 transitions. [2023-12-24 23:40:26,566 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 777 transitions. Word has length 55 [2023-12-24 23:40:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:40:26,566 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 777 transitions. [2023-12-24 23:40:26,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.106060606060606) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 777 transitions. [2023-12-24 23:40:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-24 23:40:26,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:40:26,567 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:40:26,571 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 23:40:26,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:40:26,771 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:40:26,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:40:26,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1189578370, now seen corresponding path program 40 times [2023-12-24 23:40:26,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:40:26,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98057569] [2023-12-24 23:40:26,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:40:26,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:40:26,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:40:26,772 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:40:26,773 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 (45)] Waiting until timeout for monitored process [2023-12-24 23:40:26,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:40:26,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:40:26,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 23:40:26,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:40:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:40:27,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:40:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:40:30,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:40:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98057569] [2023-12-24 23:40:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98057569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:40:30,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:40:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2023-12-24 23:40:30,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908822010] [2023-12-24 23:40:30,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:40:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-24 23:40:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:40:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-24 23:40:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=4947, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 23:40:30,525 INFO L87 Difference]: Start difference. First operand 622 states and 777 transitions. Second operand has 74 states, 74 states have (on average 1.5) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:40:54,338 INFO L93 Difference]: Finished difference Result 1338 states and 1549 transitions. [2023-12-24 23:40:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-24 23:40:54,338 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.5) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-24 23:40:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:40:54,341 INFO L225 Difference]: With dead ends: 1338 [2023-12-24 23:40:54,341 INFO L226 Difference]: Without dead ends: 1252 [2023-12-24 23:40:54,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2521 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1750, Invalid=16882, Unknown=0, NotChecked=0, Total=18632 [2023-12-24 23:40:54,342 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 361 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 4587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:40:54,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 485 Invalid, 4587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 4160 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 23:40:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-12-24 23:40:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 601. [2023-12-24 23:40:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.255) internal successors, (753), 600 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 753 transitions. [2023-12-24 23:40:56,695 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 753 transitions. Word has length 56 [2023-12-24 23:40:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:40:56,695 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 753 transitions. [2023-12-24 23:40:56,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.5) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:40:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 753 transitions. [2023-12-24 23:40:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-24 23:40:56,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:40:56,696 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:40:56,701 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 (45)] Ended with exit code 0 [2023-12-24 23:40:56,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:40:56,897 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:40:56,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:40:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1205882750, now seen corresponding path program 41 times [2023-12-24 23:40:56,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:40:56,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197805880] [2023-12-24 23:40:56,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:40:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:40:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:40:56,898 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:40:56,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-24 23:40:56,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-24 23:40:56,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:40:57,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 23:40:57,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:40:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-24 23:40:57,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:40:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-24 23:40:58,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:40:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197805880] [2023-12-24 23:40:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197805880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:40:58,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:40:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2023-12-24 23:40:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744048296] [2023-12-24 23:40:58,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:40:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-24 23:40:58,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:40:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-24 23:40:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=4133, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 23:40:58,516 INFO L87 Difference]: Start difference. First operand 601 states and 753 transitions. Second operand has 70 states, 70 states have (on average 1.1) internal successors, (77), 69 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-24 23:41:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-24 23:41:16,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15354 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=11938, Invalid=43052, Unknown=0, NotChecked=0, Total=54990 [2023-12-24 23:41:16,467 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2072 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:16,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 82 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:41:16,474 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:41:16,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-12-24 23:41:16,495 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 (46)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:41:16,495 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:41:16,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:41:16,675 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (601states) and FLOYD_HOARE automaton (currently 186 states, 70 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 235 known predicates. [2023-12-24 23:41:16,678 INFO L445 BasicCegarLoop]: Path program histogram: [41, 3, 1] [2023-12-24 23:41:16,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:41:16,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:41:16 BoogieIcfgContainer [2023-12-24 23:41:16,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:41:16,681 INFO L158 Benchmark]: Toolchain (without parser) took 835918.58ms. Allocated memory was 328.2MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 285.5MB in the beginning and 933.9MB in the end (delta: -648.4MB). Peak memory consumption was 754.6MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,681 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:41:16,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.73ms. Allocated memory is still 328.2MB. Free memory was 285.5MB in the beginning and 274.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.36ms. Allocated memory is still 328.2MB. Free memory was 274.4MB in the beginning and 272.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,682 INFO L158 Benchmark]: Boogie Preprocessor took 46.53ms. Allocated memory is still 328.2MB. Free memory was 272.9MB in the beginning and 270.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,682 INFO L158 Benchmark]: RCFGBuilder took 222.96ms. Allocated memory is still 328.2MB. Free memory was 270.8MB in the beginning and 258.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,682 INFO L158 Benchmark]: TraceAbstraction took 835441.33ms. Allocated memory was 328.2MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 257.7MB in the beginning and 933.9MB in the end (delta: -676.2MB). Peak memory consumption was 726.3MB. Max. memory is 8.0GB. [2023-12-24 23:41:16,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 180.73ms. Allocated memory is still 328.2MB. Free memory was 285.5MB in the beginning and 274.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.36ms. Allocated memory is still 328.2MB. Free memory was 274.4MB in the beginning and 272.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.53ms. Allocated memory is still 328.2MB. Free memory was 272.9MB in the beginning and 270.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 222.96ms. Allocated memory is still 328.2MB. Free memory was 270.8MB in the beginning and 258.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 835441.33ms. Allocated memory was 328.2MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 257.7MB in the beginning and 933.9MB in the end (delta: -676.2MB). Peak memory consumption was 726.3MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (601states) and FLOYD_HOARE automaton (currently 186 states, 70 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 235 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 835.4s, OverallIterations: 45, TraceHistogramMax: 32, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 756.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71917 SdHoareTripleChecker+Valid, 46.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71917 mSDsluCounter, 17162 SdHoareTripleChecker+Invalid, 39.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16490 mSDsCounter, 44135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73265 IncrementalHoareTripleChecker+Invalid, 117400 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44135 mSolverCounterUnsat, 672 mSDtfsCounter, 73265 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9882 GetRequests, 1029 SyntacticMatches, 7 SemanticMatches, 8845 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427364 ImplicationChecksByTransitivity, 607.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=622occurred in iteration=43, InterpolantAutomatonStates: 7751, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.6s AutomataMinimizationTime, 44 MinimizatonAttempts, 15408 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 47.4s InterpolantComputationTime, 1510 NumberOfCodeBlocks, 1510 NumberOfCodeBlocksAsserted, 205 NumberOfCheckSat, 2923 ConstructedInterpolants, 0 QuantifiedInterpolants, 13864 SizeOfPredicates, 115 NumberOfNonLiveVariables, 4440 ConjunctsInSsa, 1212 ConjunctsInUnsatCore, 89 InterpolantComputations, 1 PerfectInterpolantSequences, 2546/17634 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