/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/theatreSquare.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:54:41,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:54:41,581 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 23:54:41,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:54:41,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:54:41,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:54:41,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:54:41,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:54:41,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:54:41,610 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:54:41,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:54:41,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:54:41,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:54:41,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:54:41,613 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:54:41,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:54:41,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:54:41,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:54:41,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:54:41,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:54:41,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:54:41,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:54:41,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:54:41,615 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:54:41,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:54:41,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:54:41,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:54:41,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:54:41,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:54:41,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:54:41,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:54:41,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:54:41,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:54:41,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:54:41,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:54:41,619 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:54:41,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:54:41,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:54:41,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:54:41,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:54:41,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:54:41,859 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:54:41,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2023-12-24 23:54:42,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:54:43,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:54:43,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2023-12-24 23:54:43,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febbce756/70f0913d53cf4af58a6634fe903f5ead/FLAGd137f01a4 [2023-12-24 23:54:43,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febbce756/70f0913d53cf4af58a6634fe903f5ead [2023-12-24 23:54:43,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:54:43,191 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:54:43,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:54:43,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:54:43,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:54:43,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b39c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43, skipping insertion in model container [2023-12-24 23:54:43,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:54:43,341 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/theatreSquare.c[370,383] [2023-12-24 23:54:43,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:54:43,372 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:54:43,380 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/theatreSquare.c[370,383] [2023-12-24 23:54:43,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:54:43,399 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:54:43,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43 WrapperNode [2023-12-24 23:54:43,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:54:43,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:54:43,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:54:43,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:54:43,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,442 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2023-12-24 23:54:43,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:54:43,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:54:43,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:54:43,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:54:43,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,463 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 23:54:43,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:54:43,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:54:43,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:54:43,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:54:43,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (1/1) ... [2023-12-24 23:54:43,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:54:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:54:43,509 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 23:54:43,514 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 23:54:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:54:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:54:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:54:43,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:54:43,581 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:54:43,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:54:43,746 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:54:43,785 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:54:43,786 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-24 23:54:43,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:54:43 BoogieIcfgContainer [2023-12-24 23:54:43,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:54:43,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:54:43,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:54:43,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:54:43,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:54:43" (1/3) ... [2023-12-24 23:54:43,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7963471f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:54:43, skipping insertion in model container [2023-12-24 23:54:43,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:54:43" (2/3) ... [2023-12-24 23:54:43,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7963471f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:54:43, skipping insertion in model container [2023-12-24 23:54:43,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:54:43" (3/3) ... [2023-12-24 23:54:43,792 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2023-12-24 23:54:43,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:54:43,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:54:43,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:54:43,857 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;@3c032048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:54:43,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:54:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 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 23:54:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 23:54:43,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:43,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 23:54:43,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:43,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash 126370538, now seen corresponding path program 1 times [2023-12-24 23:54:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998393542] [2023-12-24 23:54:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:43,882 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 23:54:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:43,896 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 23:54:43,897 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 23:54:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:43,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:54:43,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:44,024 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 23:54:44,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:44,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998393542] [2023-12-24 23:54:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998393542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:44,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:44,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:54:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156983939] [2023-12-24 23:54:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:44,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:54:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:54:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:44,052 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 23:54:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:44,095 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2023-12-24 23:54:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:54:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-24 23:54:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:44,105 INFO L225 Difference]: With dead ends: 36 [2023-12-24 23:54:44,106 INFO L226 Difference]: Without dead ends: 16 [2023-12-24 23:54:44,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:54:44,111 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:44,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-24 23:54:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-24 23:54:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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 23:54:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-24 23:54:44,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 5 [2023-12-24 23:54:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:44,138 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-24 23:54:44,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 23:54:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-24 23:54:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 23:54:44,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:44,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:44,146 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 23:54:44,339 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 23:54:44,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:44,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1401987001, now seen corresponding path program 1 times [2023-12-24 23:54:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772462842] [2023-12-24 23:54:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:44,342 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 23:54:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:44,343 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 23:54:44,344 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 23:54:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:44,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 23:54:44,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:44,498 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 23:54:44,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:44,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:44,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772462842] [2023-12-24 23:54:44,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772462842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:44,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 23:54:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255750192] [2023-12-24 23:54:44,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:44,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 23:54:44,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 23:54:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:54:44,501 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 23:54:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:44,554 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-12-24 23:54:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 23:54:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-24 23:54:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:44,556 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:54:44,557 INFO L226 Difference]: Without dead ends: 28 [2023-12-24 23:54:44,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:54:44,559 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:44,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 73 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-24 23:54:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-12-24 23:54:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 23:54:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-12-24 23:54:44,569 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2023-12-24 23:54:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:44,570 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-12-24 23:54:44,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 23:54:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-12-24 23:54:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 23:54:44,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:44,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:44,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 23:54:44,773 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 23:54:44,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:44,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash 541116398, now seen corresponding path program 1 times [2023-12-24 23:54:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373231536] [2023-12-24 23:54:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:44,778 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 23:54:44,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:44,779 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 23:54:44,779 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 23:54:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:44,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:54:44,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:54:44,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:44,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:44,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373231536] [2023-12-24 23:54:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373231536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:44,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:44,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:54:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889612864] [2023-12-24 23:54:44,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:44,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:54:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:54:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:44,874 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:54:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:44,905 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-12-24 23:54:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:54:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 23:54:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:44,907 INFO L225 Difference]: With dead ends: 37 [2023-12-24 23:54:44,907 INFO L226 Difference]: Without dead ends: 28 [2023-12-24 23:54:44,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:44,927 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:44,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-24 23:54:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-24 23:54:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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 23:54:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2023-12-24 23:54:44,938 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 16 [2023-12-24 23:54:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:44,939 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2023-12-24 23:54:44,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:54:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-12-24 23:54:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 23:54:44,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:44,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:44,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 23:54:45,143 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 23:54:45,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:45,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash -180343911, now seen corresponding path program 1 times [2023-12-24 23:54:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581106535] [2023-12-24 23:54:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:45,144 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 23:54:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:45,164 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 23:54:45,165 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 (5)] Waiting until timeout for monitored process [2023-12-24 23:54:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:45,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:54:45,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:54:45,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:45,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:45,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581106535] [2023-12-24 23:54:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581106535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:45,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:45,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:54:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847429046] [2023-12-24 23:54:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:45,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:54:45,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:54:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:45,238 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:54:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:45,281 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2023-12-24 23:54:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:54:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 23:54:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:45,284 INFO L225 Difference]: With dead ends: 47 [2023-12-24 23:54:45,284 INFO L226 Difference]: Without dead ends: 32 [2023-12-24 23:54:45,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:45,285 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:45,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-24 23:54:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-24 23:54:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 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 23:54:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2023-12-24 23:54:45,289 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 16 [2023-12-24 23:54:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:45,289 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2023-12-24 23:54:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:54:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-12-24 23:54:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-24 23:54:45,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:45,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:45,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 23:54:45,492 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 23:54:45,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:45,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash 668508425, now seen corresponding path program 1 times [2023-12-24 23:54:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500254548] [2023-12-24 23:54:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:45,493 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 23:54:45,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:45,494 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 23:54:45,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 23:54:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:45,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:54:45,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:54:45,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:54:45,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500254548] [2023-12-24 23:54:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500254548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:45,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 23:54:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057576117] [2023-12-24 23:54:45,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:45,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 23:54:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 23:54:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 23:54:45,727 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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 23:54:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:45,822 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2023-12-24 23:54:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:54:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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 17 [2023-12-24 23:54:45,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:45,824 INFO L225 Difference]: With dead ends: 40 [2023-12-24 23:54:45,824 INFO L226 Difference]: Without dead ends: 32 [2023-12-24 23:54:45,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:54:45,825 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:45,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 133 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-24 23:54:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-24 23:54:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 23:54:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2023-12-24 23:54:45,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 17 [2023-12-24 23:54:45,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:45,835 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2023-12-24 23:54:45,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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 23:54:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-12-24 23:54:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-24 23:54:45,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:45,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:45,841 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 23:54:46,040 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 23:54:46,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:46,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:46,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1402974455, now seen corresponding path program 1 times [2023-12-24 23:54:46,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:46,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088429065] [2023-12-24 23:54:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:46,041 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 23:54:46,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:46,043 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 23:54:46,044 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 23:54:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:46,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:54:46,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:54:46,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:54:46,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088429065] [2023-12-24 23:54:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088429065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:46,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:46,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-24 23:54:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062503012] [2023-12-24 23:54:46,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 23:54:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 23:54:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 23:54:46,217 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 23:54:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:46,302 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2023-12-24 23:54:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 23:54:46,302 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 23:54:46,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:46,303 INFO L225 Difference]: With dead ends: 60 [2023-12-24 23:54:46,303 INFO L226 Difference]: Without dead ends: 52 [2023-12-24 23:54:46,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-24 23:54:46,303 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:46,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 117 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-24 23:54:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2023-12-24 23:54:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2023-12-24 23:54:46,308 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2023-12-24 23:54:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2023-12-24 23:54:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 23:54:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2023-12-24 23:54:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 23:54:46,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:46,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:46,325 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 23:54:46,513 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 23:54:46,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:46,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:46,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1306350563, now seen corresponding path program 1 times [2023-12-24 23:54:46,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:46,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542009142] [2023-12-24 23:54:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:46,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:54:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:46,515 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 23:54:46,518 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 23:54:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:46,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:54:46,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:54:46,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:46,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:46,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542009142] [2023-12-24 23:54:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542009142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:54:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76361431] [2023-12-24 23:54:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:54:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:54:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:54:46,575 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 23:54:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:46,586 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2023-12-24 23:54:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:54:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 23:54:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:46,587 INFO L225 Difference]: With dead ends: 55 [2023-12-24 23:54:46,587 INFO L226 Difference]: Without dead ends: 34 [2023-12-24 23:54:46,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:54:46,588 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:46,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-24 23:54:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-24 23:54:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:54:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2023-12-24 23:54:46,592 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 18 [2023-12-24 23:54:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:46,592 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2023-12-24 23:54:46,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 23:54:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2023-12-24 23:54:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 23:54:46,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:46,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:46,595 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 23:54:46,795 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 23:54:46,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:46,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1647246806, now seen corresponding path program 1 times [2023-12-24 23:54:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597704108] [2023-12-24 23:54:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:46,797 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 23:54:46,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:46,798 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 23:54:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:46,836 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 23:54:46,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:54:46,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 23:54:46,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:46,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597704108] [2023-12-24 23:54:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597704108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:46,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:54:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958396651] [2023-12-24 23:54:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:54:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:54:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:46,894 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 23:54:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:46,918 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-12-24 23:54:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:54:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 23:54:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:46,919 INFO L225 Difference]: With dead ends: 45 [2023-12-24 23:54:46,919 INFO L226 Difference]: Without dead ends: 36 [2023-12-24 23:54:46,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:54:46,922 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:46,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-24 23:54:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-24 23:54:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:54:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-24 23:54:46,936 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 18 [2023-12-24 23:54:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:46,937 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-24 23:54:46,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 23:54:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-24 23:54:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 23:54:46,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:46,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:46,940 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 23:54:47,139 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 23:54:47,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:47,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -186893346, now seen corresponding path program 1 times [2023-12-24 23:54:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:47,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663466211] [2023-12-24 23:54:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:47,141 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 23:54:47,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:47,142 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 23:54:47,144 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 23:54:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:47,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:54:47,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:47,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:47,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:47,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663466211] [2023-12-24 23:54:47,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663466211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:47,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:47,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:54:47,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298038666] [2023-12-24 23:54:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:47,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:54:47,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:54:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:54:47,196 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 23:54:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:47,212 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-12-24 23:54:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:54:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 19 [2023-12-24 23:54:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:47,212 INFO L225 Difference]: With dead ends: 49 [2023-12-24 23:54:47,212 INFO L226 Difference]: Without dead ends: 32 [2023-12-24 23:54:47,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:54:47,213 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:47,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-24 23:54:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-24 23:54:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:54:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-12-24 23:54:47,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 19 [2023-12-24 23:54:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:47,217 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-12-24 23:54:47,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 23:54:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-12-24 23:54:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 23:54:47,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:47,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:47,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-24 23:54:47,421 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 23:54:47,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1592914882, now seen corresponding path program 1 times [2023-12-24 23:54:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134309912] [2023-12-24 23:54:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:47,437 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 23:54:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:47,438 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 23:54:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:47,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:54:47,472 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 23:54:47,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:47,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:54:47,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134309912] [2023-12-24 23:54:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134309912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:54:47,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:54:47,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:54:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718006859] [2023-12-24 23:54:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:54:47,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:54:47,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:54:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:54:47,512 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 23:54:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:47,532 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-12-24 23:54:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:54:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2023-12-24 23:54:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:47,533 INFO L225 Difference]: With dead ends: 37 [2023-12-24 23:54:47,533 INFO L226 Difference]: Without dead ends: 28 [2023-12-24 23:54:47,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:54:47,534 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:47,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-24 23:54:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-24 23:54:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2023-12-24 23:54:47,537 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 19 [2023-12-24 23:54:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:47,537 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2023-12-24 23:54:47,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 23:54:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2023-12-24 23:54:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 23:54:47,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:47,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:47,542 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 23:54:47,740 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 23:54:47,740 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2044207726, now seen corresponding path program 1 times [2023-12-24 23:54:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874773352] [2023-12-24 23:54:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:47,741 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 23:54:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:47,742 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 23:54:47,768 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 23:54:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:47,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:54:47,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:47,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:47,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:47,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874773352] [2023-12-24 23:54:47,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874773352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:47,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:47,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-24 23:54:47,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481584709] [2023-12-24 23:54:47,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:47,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:54:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:54:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:54:47,823 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 23:54:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:47,890 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2023-12-24 23:54:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 23:54:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 20 [2023-12-24 23:54:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:47,892 INFO L225 Difference]: With dead ends: 62 [2023-12-24 23:54:47,892 INFO L226 Difference]: Without dead ends: 49 [2023-12-24 23:54:47,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 23:54:47,893 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:47,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 77 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-24 23:54:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2023-12-24 23:54:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 23:54:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2023-12-24 23:54:47,898 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 20 [2023-12-24 23:54:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:47,898 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2023-12-24 23:54:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 23:54:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2023-12-24 23:54:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 23:54:47,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:47,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:47,903 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 23:54:48,101 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 23:54:48,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1720419291, now seen corresponding path program 1 times [2023-12-24 23:54:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:48,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128845566] [2023-12-24 23:54:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:48,102 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 23:54:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:48,107 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 23:54:48,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 23:54:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:48,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:54:48,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:48,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:48,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128845566] [2023-12-24 23:54:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128845566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:48,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:48,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-24 23:54:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851152419] [2023-12-24 23:54:48,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:54:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:54:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:54:48,199 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 23:54:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:48,275 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2023-12-24 23:54:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 23:54:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 20 [2023-12-24 23:54:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:48,276 INFO L225 Difference]: With dead ends: 76 [2023-12-24 23:54:48,276 INFO L226 Difference]: Without dead ends: 71 [2023-12-24 23:54:48,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 23:54:48,276 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:48,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-24 23:54:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 38. [2023-12-24 23:54:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 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 23:54:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2023-12-24 23:54:48,288 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 20 [2023-12-24 23:54:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:48,288 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2023-12-24 23:54:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 23:54:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2023-12-24 23:54:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 23:54:48,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:48,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:48,302 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 23:54:48,491 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 23:54:48,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:48,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1822582796, now seen corresponding path program 1 times [2023-12-24 23:54:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:48,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623704743] [2023-12-24 23:54:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:54:48,493 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 23:54:48,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:48,494 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 23:54:48,501 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 23:54:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:48,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 23:54:48,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:48,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:48,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623704743] [2023-12-24 23:54:48,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623704743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:48,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:48,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-24 23:54:48,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683897660] [2023-12-24 23:54:48,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 23:54:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 23:54:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-24 23:54:48,795 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:48,995 INFO L93 Difference]: Finished difference Result 74 states and 103 transitions. [2023-12-24 23:54:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 23:54:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-24 23:54:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:48,996 INFO L225 Difference]: With dead ends: 74 [2023-12-24 23:54:48,996 INFO L226 Difference]: Without dead ends: 69 [2023-12-24 23:54:48,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:54:48,996 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:48,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 202 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-24 23:54:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2023-12-24 23:54:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 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 23:54:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2023-12-24 23:54:49,005 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 21 [2023-12-24 23:54:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:49,005 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2023-12-24 23:54:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2023-12-24 23:54:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:54:49,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:49,006 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:49,010 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 23:54:49,208 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 23:54:49,208 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 110216570, now seen corresponding path program 2 times [2023-12-24 23:54:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180422468] [2023-12-24 23:54:49,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:54:49,209 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 23:54:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:49,211 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 23:54:49,244 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 23:54:49,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:54:49,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:49,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:54:49,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:49,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:49,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180422468] [2023-12-24 23:54:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180422468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:49,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:49,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472152578] [2023-12-24 23:54:49,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:49,572 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 23:54:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:49,727 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2023-12-24 23:54:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 23:54:49,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 22 [2023-12-24 23:54:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:49,728 INFO L225 Difference]: With dead ends: 93 [2023-12-24 23:54:49,729 INFO L226 Difference]: Without dead ends: 82 [2023-12-24 23:54:49,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:54:49,729 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:49,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-24 23:54:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2023-12-24 23:54:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 72 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 23:54:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2023-12-24 23:54:49,739 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 22 [2023-12-24 23:54:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:49,740 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2023-12-24 23:54:49,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 23:54:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2023-12-24 23:54:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:54:49,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:49,740 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:49,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 23:54:49,943 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 23:54:49,943 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:49,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 694684155, now seen corresponding path program 3 times [2023-12-24 23:54:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:49,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729599259] [2023-12-24 23:54:49,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:54:49,945 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 23:54:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:49,946 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 23:54:49,946 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 23:54:49,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:54:49,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:49,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:54:49,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:50,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:50,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729599259] [2023-12-24 23:54:50,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729599259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:50,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:50,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-24 23:54:50,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614284383] [2023-12-24 23:54:50,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 23:54:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:50,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 23:54:50,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:54:50,095 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 23:54:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:50,148 INFO L93 Difference]: Finished difference Result 94 states and 128 transitions. [2023-12-24 23:54:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 23:54:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 23:54:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:50,149 INFO L225 Difference]: With dead ends: 94 [2023-12-24 23:54:50,149 INFO L226 Difference]: Without dead ends: 83 [2023-12-24 23:54:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:54:50,150 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 102 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-24 23:54:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2023-12-24 23:54:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:54:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2023-12-24 23:54:50,160 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 22 [2023-12-24 23:54:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:50,161 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2023-12-24 23:54:50,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 23:54:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2023-12-24 23:54:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:54:50,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:50,161 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:50,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 23:54:50,364 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 23:54:50,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:50,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -752822738, now seen corresponding path program 4 times [2023-12-24 23:54:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223953059] [2023-12-24 23:54:50,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:54:50,365 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 23:54:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:50,380 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 23:54:50,412 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 23:54:50,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:54:50,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:50,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:54:50,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:50,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:50,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:50,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223953059] [2023-12-24 23:54:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223953059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:50,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-24 23:54:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836416106] [2023-12-24 23:54:50,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 23:54:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 23:54:50,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:54:50,492 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 23:54:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:50,543 INFO L93 Difference]: Finished difference Result 131 states and 180 transitions. [2023-12-24 23:54:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 23:54:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 23:54:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:50,544 INFO L225 Difference]: With dead ends: 131 [2023-12-24 23:54:50,544 INFO L226 Difference]: Without dead ends: 93 [2023-12-24 23:54:50,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:54:50,545 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:50,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:54:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-24 23:54:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-12-24 23:54:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 23:54:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2023-12-24 23:54:50,570 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 22 [2023-12-24 23:54:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:50,570 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2023-12-24 23:54:50,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 23:54:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2023-12-24 23:54:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:54:50,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:50,571 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:50,582 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 23:54:50,772 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 23:54:50,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:50,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash 38970029, now seen corresponding path program 5 times [2023-12-24 23:54:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:50,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957488834] [2023-12-24 23:54:50,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:54:50,774 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 23:54:50,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:50,775 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 23:54:50,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 23:54:50,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:54:50,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:50,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:54:50,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:51,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:51,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:51,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957488834] [2023-12-24 23:54:51,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957488834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:51,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:51,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:51,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548773141] [2023-12-24 23:54:51,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:51,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:51,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:51,194 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:51,355 INFO L93 Difference]: Finished difference Result 118 states and 155 transitions. [2023-12-24 23:54:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 23:54:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 23:54:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:51,356 INFO L225 Difference]: With dead ends: 118 [2023-12-24 23:54:51,356 INFO L226 Difference]: Without dead ends: 106 [2023-12-24 23:54:51,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:54:51,357 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:51,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 175 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-24 23:54:51,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2023-12-24 23:54:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3763440860215055) internal successors, (128), 93 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2023-12-24 23:54:51,368 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 22 [2023-12-24 23:54:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:51,368 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2023-12-24 23:54:51,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2023-12-24 23:54:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:54:51,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:51,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:51,371 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 (18)] Ended with exit code 0 [2023-12-24 23:54:51,571 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 23:54:51,571 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:51,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1294635326, now seen corresponding path program 6 times [2023-12-24 23:54:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447352573] [2023-12-24 23:54:51,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:54:51,572 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 23:54:51,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:51,573 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 23:54:51,574 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 23:54:51,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-24 23:54:51,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:51,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 23:54:51,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:51,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:51,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447352573] [2023-12-24 23:54:51,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447352573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:51,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:51,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:51,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47640868] [2023-12-24 23:54:51,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:51,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:51,828 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 23:54:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:51,975 INFO L93 Difference]: Finished difference Result 140 states and 184 transitions. [2023-12-24 23:54:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 23:54:51,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 23 [2023-12-24 23:54:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:51,976 INFO L225 Difference]: With dead ends: 140 [2023-12-24 23:54:51,976 INFO L226 Difference]: Without dead ends: 105 [2023-12-24 23:54:51,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:54:51,977 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:51,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 107 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-24 23:54:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2023-12-24 23:54:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3655913978494623) internal successors, (127), 93 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 23:54:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 127 transitions. [2023-12-24 23:54:52,004 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 127 transitions. Word has length 23 [2023-12-24 23:54:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:52,004 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 127 transitions. [2023-12-24 23:54:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 23:54:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 127 transitions. [2023-12-24 23:54:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:54:52,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:52,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:52,021 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 23:54:52,208 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 23:54:52,208 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:52,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash 652795641, now seen corresponding path program 7 times [2023-12-24 23:54:52,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411488740] [2023-12-24 23:54:52,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:54:52,209 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 23:54:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:52,210 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 23:54:52,212 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 23:54:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:52,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 23:54:52,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:52,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:52,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411488740] [2023-12-24 23:54:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411488740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:52,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2023-12-24 23:54:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648537307] [2023-12-24 23:54:52,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:52,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:54:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:54:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:54:52,581 INFO L87 Difference]: Start difference. First operand 94 states and 127 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 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 23:54:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:52,872 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2023-12-24 23:54:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:54:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 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 23 [2023-12-24 23:54:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:52,873 INFO L225 Difference]: With dead ends: 147 [2023-12-24 23:54:52,874 INFO L226 Difference]: Without dead ends: 139 [2023-12-24 23:54:52,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2023-12-24 23:54:52,874 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:52,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 322 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:54:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-24 23:54:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2023-12-24 23:54:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 23:54:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2023-12-24 23:54:52,890 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 23 [2023-12-24 23:54:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:52,892 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2023-12-24 23:54:52,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 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 23:54:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2023-12-24 23:54:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:54:52,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:52,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:52,895 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 23:54:53,095 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 23:54:53,096 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1360307614, now seen corresponding path program 8 times [2023-12-24 23:54:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994479081] [2023-12-24 23:54:53,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:54:53,097 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 23:54:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:53,098 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 23:54:53,099 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 23:54:53,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:54:53,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:53,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 23:54:53,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:53,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:53,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:53,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994479081] [2023-12-24 23:54:53,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994479081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:53,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:53,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:53,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393605652] [2023-12-24 23:54:53,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:53,364 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:53,532 INFO L93 Difference]: Finished difference Result 138 states and 181 transitions. [2023-12-24 23:54:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:54:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-24 23:54:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:53,533 INFO L225 Difference]: With dead ends: 138 [2023-12-24 23:54:53,533 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 23:54:53,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:54:53,534 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:53,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 170 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 23:54:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2023-12-24 23:54:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 23:54:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2023-12-24 23:54:53,561 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 23 [2023-12-24 23:54:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:53,562 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2023-12-24 23:54:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2023-12-24 23:54:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:54:53,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:53,563 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:53,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 23:54:53,766 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 23:54:53,766 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:53,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1793446867, now seen corresponding path program 9 times [2023-12-24 23:54:53,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:53,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621454431] [2023-12-24 23:54:53,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:54:53,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:54:53,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:53,768 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 23:54:53,805 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 23:54:53,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-24 23:54:53,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:53,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 23:54:53,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:54,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:54,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621454431] [2023-12-24 23:54:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621454431] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:54,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:54:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984028566] [2023-12-24 23:54:54,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:54,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:54:54,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:54:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:54:54,390 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 23:54:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:54,861 INFO L93 Difference]: Finished difference Result 171 states and 222 transitions. [2023-12-24 23:54:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 23:54:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 24 [2023-12-24 23:54:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:54,863 INFO L225 Difference]: With dead ends: 171 [2023-12-24 23:54:54,863 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 23:54:54,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:54:54,864 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 82 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:54,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 205 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:54:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 23:54:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2023-12-24 23:54:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.35) internal successors, (162), 120 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 23:54:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2023-12-24 23:54:54,904 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 24 [2023-12-24 23:54:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:54,904 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2023-12-24 23:54:54,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 23:54:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2023-12-24 23:54:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:54:54,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:54,905 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:54,922 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 23:54:55,107 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 23:54:55,108 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 292877658, now seen corresponding path program 10 times [2023-12-24 23:54:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845507860] [2023-12-24 23:54:55,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:54:55,108 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 23:54:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:55,109 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 23:54:55,110 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 23:54:55,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:54:55,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:55,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:54:55,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:55,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:54:55,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845507860] [2023-12-24 23:54:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845507860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:55,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:54:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723458670] [2023-12-24 23:54:55,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:55,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:54:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:54:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:54:55,766 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 23:54:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:56,268 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2023-12-24 23:54:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 23:54:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2023-12-24 23:54:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:56,271 INFO L225 Difference]: With dead ends: 145 [2023-12-24 23:54:56,271 INFO L226 Difference]: Without dead ends: 133 [2023-12-24 23:54:56,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:54:56,271 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 96 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:56,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 183 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:54:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-24 23:54:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2023-12-24 23:54:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3414634146341464) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 23:54:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2023-12-24 23:54:56,297 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 24 [2023-12-24 23:54:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:56,297 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2023-12-24 23:54:56,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 23:54:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2023-12-24 23:54:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:54:56,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:56,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:56,314 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 23:54:56,501 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 23:54:56,501 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:56,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1917800498, now seen corresponding path program 11 times [2023-12-24 23:54:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795285864] [2023-12-24 23:54:56,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:54:56,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:54:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:56,503 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 23:54:56,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 23:54:56,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:54:56,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:56,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:54:56,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:54:56,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:54:56,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795285864] [2023-12-24 23:54:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795285864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:56,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:56,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:56,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829499308] [2023-12-24 23:54:56,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:56,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:56,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:56,632 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 23:54:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:56,938 INFO L93 Difference]: Finished difference Result 252 states and 349 transitions. [2023-12-24 23:54:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 23:54:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 24 [2023-12-24 23:54:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:56,939 INFO L225 Difference]: With dead ends: 252 [2023-12-24 23:54:56,939 INFO L226 Difference]: Without dead ends: 192 [2023-12-24 23:54:56,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-12-24 23:54:56,940 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:56,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 119 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-24 23:54:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 129. [2023-12-24 23:54:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.34375) internal successors, (172), 128 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:54:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2023-12-24 23:54:56,962 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 24 [2023-12-24 23:54:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:56,962 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2023-12-24 23:54:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 23:54:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2023-12-24 23:54:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:54:56,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:56,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:56,965 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 23:54:57,165 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 23:54:57,165 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:57,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1920327959, now seen corresponding path program 12 times [2023-12-24 23:54:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689342154] [2023-12-24 23:54:57,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:54:57,166 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 23:54:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:57,167 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 23:54:57,168 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 23:54:57,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-24 23:54:57,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:57,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:54:57,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:54:57,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:54:57,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:57,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689342154] [2023-12-24 23:54:57,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689342154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:57,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:54:57,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004729834] [2023-12-24 23:54:57,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:57,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:54:57,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:54:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:54:57,319 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 23:54:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:57,647 INFO L93 Difference]: Finished difference Result 244 states and 328 transitions. [2023-12-24 23:54:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 23:54:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 24 [2023-12-24 23:54:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:57,648 INFO L225 Difference]: With dead ends: 244 [2023-12-24 23:54:57,648 INFO L226 Difference]: Without dead ends: 239 [2023-12-24 23:54:57,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:54:57,649 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:57,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 149 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:54:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-24 23:54:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 165. [2023-12-24 23:54:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.396341463414634) internal successors, (229), 164 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 23:54:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 229 transitions. [2023-12-24 23:54:57,681 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 229 transitions. Word has length 24 [2023-12-24 23:54:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:57,681 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 229 transitions. [2023-12-24 23:54:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 23:54:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 229 transitions. [2023-12-24 23:54:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-24 23:54:57,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:57,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:57,686 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 23:54:57,884 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 23:54:57,885 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -66002452, now seen corresponding path program 13 times [2023-12-24 23:54:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306737732] [2023-12-24 23:54:57,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:54:57,885 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 23:54:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:57,886 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 23:54:57,920 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 23:54:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:54:57,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 23:54:57,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:58,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:54:58,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306737732] [2023-12-24 23:54:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306737732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:58,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2023-12-24 23:54:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358576893] [2023-12-24 23:54:58,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 23:54:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 23:54:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:54:58,288 INFO L87 Difference]: Start difference. First operand 165 states and 229 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 23:54:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:58,694 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2023-12-24 23:54:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 23:54:58,694 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:54:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:58,695 INFO L225 Difference]: With dead ends: 245 [2023-12-24 23:54:58,695 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 23:54:58,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:54:58,696 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:58,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 409 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:54:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 23:54:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 189. [2023-12-24 23:54:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.398936170212766) internal successors, (263), 188 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 23:54:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2023-12-24 23:54:58,732 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2023-12-24 23:54:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:58,732 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2023-12-24 23:54:58,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 23:54:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2023-12-24 23:54:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-24 23:54:58,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:58,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:58,737 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 23:54:58,935 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 23:54:58,935 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:58,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash -570183088, now seen corresponding path program 14 times [2023-12-24 23:54:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:54:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416995455] [2023-12-24 23:54:58,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:54:58,936 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 23:54:58,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:54:58,937 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 23:54:58,952 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 23:54:58,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:54:58,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:54:58,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 23:54:58,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:54:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:59,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:54:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:54:59,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:54:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416995455] [2023-12-24 23:54:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416995455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:54:59,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:54:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-24 23:54:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910061473] [2023-12-24 23:54:59,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:54:59,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 23:54:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:54:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 23:54:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:54:59,361 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 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 23:54:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:54:59,750 INFO L93 Difference]: Finished difference Result 232 states and 317 transitions. [2023-12-24 23:54:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:54:59,750 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 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 25 [2023-12-24 23:54:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:54:59,751 INFO L225 Difference]: With dead ends: 232 [2023-12-24 23:54:59,751 INFO L226 Difference]: Without dead ends: 227 [2023-12-24 23:54:59,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2023-12-24 23:54:59,752 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:54:59,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 356 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:54:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-24 23:54:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 214. [2023-12-24 23:54:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.3896713615023475) internal successors, (296), 213 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 23:54:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2023-12-24 23:54:59,795 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 25 [2023-12-24 23:54:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:54:59,795 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2023-12-24 23:54:59,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 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 23:54:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2023-12-24 23:54:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-24 23:54:59,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:54:59,796 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:54:59,806 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 23:54:59,999 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 23:54:59,999 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:54:59,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:54:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1633070224, now seen corresponding path program 2 times [2023-12-24 23:54:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780335858] [2023-12-24 23:55:00,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:55:00,000 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 23:55:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:00,001 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 23:55:00,005 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 23:55:00,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:55:00,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:00,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:55:00,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:55:00,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:55:00,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780335858] [2023-12-24 23:55:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780335858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:00,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:00,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 23:55:00,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608526951] [2023-12-24 23:55:00,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:00,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:55:00,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:55:00,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:55:00,144 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 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 23:55:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:00,602 INFO L93 Difference]: Finished difference Result 459 states and 627 transitions. [2023-12-24 23:55:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:55:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 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 25 [2023-12-24 23:55:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:00,604 INFO L225 Difference]: With dead ends: 459 [2023-12-24 23:55:00,604 INFO L226 Difference]: Without dead ends: 454 [2023-12-24 23:55:00,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2023-12-24 23:55:00,605 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 126 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:00,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 222 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-24 23:55:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 245. [2023-12-24 23:55:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4672131147540983) internal successors, (358), 244 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 23:55:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 358 transitions. [2023-12-24 23:55:00,677 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 358 transitions. Word has length 25 [2023-12-24 23:55:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:00,677 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 358 transitions. [2023-12-24 23:55:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 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 23:55:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 358 transitions. [2023-12-24 23:55:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 23:55:00,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:00,679 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:00,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:00,882 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 23:55:00,882 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:00,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1693616026, now seen corresponding path program 15 times [2023-12-24 23:55:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184567124] [2023-12-24 23:55:00,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:55:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:55:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:00,884 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 23:55:00,885 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 (29)] Waiting until timeout for monitored process [2023-12-24 23:55:00,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-24 23:55:00,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:00,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:55:00,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:01,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:02,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184567124] [2023-12-24 23:55:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184567124] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:02,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:55:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045765064] [2023-12-24 23:55:02,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:02,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:55:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:55:02,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:55:02,060 INFO L87 Difference]: Start difference. First operand 245 states and 358 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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 23:55:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:03,310 INFO L93 Difference]: Finished difference Result 365 states and 508 transitions. [2023-12-24 23:55:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:55:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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 23:55:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:03,312 INFO L225 Difference]: With dead ends: 365 [2023-12-24 23:55:03,312 INFO L226 Difference]: Without dead ends: 332 [2023-12-24 23:55:03,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:55:03,313 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 119 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:03,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 361 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:55:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-24 23:55:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 260. [2023-12-24 23:55:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.4903474903474903) internal successors, (386), 259 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 23:55:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 386 transitions. [2023-12-24 23:55:03,415 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 386 transitions. Word has length 26 [2023-12-24 23:55:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:03,415 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 386 transitions. [2023-12-24 23:55:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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 23:55:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 386 transitions. [2023-12-24 23:55:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 23:55:03,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:03,416 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:03,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-24 23:55:03,618 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 23:55:03,618 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:03,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1945166861, now seen corresponding path program 16 times [2023-12-24 23:55:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884074134] [2023-12-24 23:55:03,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:55:03,619 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 23:55:03,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:03,620 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 23:55:03,640 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 23:55:03,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:55:03,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:03,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:55:03,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:04,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:04,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884074134] [2023-12-24 23:55:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884074134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:04,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:55:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037348493] [2023-12-24 23:55:04,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:55:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:55:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:55:04,689 INFO L87 Difference]: Start difference. First operand 260 states and 386 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 23:55:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:05,613 INFO L93 Difference]: Finished difference Result 298 states and 431 transitions. [2023-12-24 23:55:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:55:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 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 23:55:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:05,615 INFO L225 Difference]: With dead ends: 298 [2023-12-24 23:55:05,615 INFO L226 Difference]: Without dead ends: 280 [2023-12-24 23:55:05,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-24 23:55:05,615 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:05,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 316 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:55:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-24 23:55:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 265. [2023-12-24 23:55:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.481060606060606) internal successors, (391), 264 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 23:55:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 391 transitions. [2023-12-24 23:55:05,687 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 391 transitions. Word has length 26 [2023-12-24 23:55:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:05,687 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 391 transitions. [2023-12-24 23:55:05,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 23:55:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 391 transitions. [2023-12-24 23:55:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 23:55:05,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:05,688 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:05,690 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 (30)] Ended with exit code 0 [2023-12-24 23:55:05,890 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 23:55:05,891 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:05,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1743716338, now seen corresponding path program 17 times [2023-12-24 23:55:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23845305] [2023-12-24 23:55:05,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:55:05,891 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 23:55:05,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:05,892 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 23:55:05,893 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 23:55:05,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-24 23:55:05,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:05,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:55:05,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:55:05,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-24 23:55:06,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:06,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23845305] [2023-12-24 23:55:06,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23845305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:06,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:06,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 23:55:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745907987] [2023-12-24 23:55:06,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:55:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:55:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:55:06,058 INFO L87 Difference]: Start difference. First operand 265 states and 391 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:06,236 INFO L93 Difference]: Finished difference Result 393 states and 572 transitions. [2023-12-24 23:55:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 23:55:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 23:55:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:06,246 INFO L225 Difference]: With dead ends: 393 [2023-12-24 23:55:06,246 INFO L226 Difference]: Without dead ends: 290 [2023-12-24 23:55:06,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:06,247 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:06,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 145 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-24 23:55:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 286. [2023-12-24 23:55:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.4596491228070176) internal successors, (416), 285 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 23:55:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 416 transitions. [2023-12-24 23:55:06,324 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 416 transitions. Word has length 26 [2023-12-24 23:55:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:06,324 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 416 transitions. [2023-12-24 23:55:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 416 transitions. [2023-12-24 23:55:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:55:06,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:06,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:06,330 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 23:55:06,527 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 23:55:06,528 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:06,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash -384644711, now seen corresponding path program 18 times [2023-12-24 23:55:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:06,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457175287] [2023-12-24 23:55:06,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:55:06,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:55:06,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:06,529 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 23:55:06,530 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 23:55:06,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-24 23:55:06,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:06,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 23:55:06,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:06,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:07,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457175287] [2023-12-24 23:55:07,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457175287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:07,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:07,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2023-12-24 23:55:07,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963270926] [2023-12-24 23:55:07,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 23:55:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 23:55:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2023-12-24 23:55:07,035 INFO L87 Difference]: Start difference. First operand 286 states and 416 transitions. Second operand has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 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 23:55:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:07,757 INFO L93 Difference]: Finished difference Result 380 states and 539 transitions. [2023-12-24 23:55:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 23:55:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 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 27 [2023-12-24 23:55:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:07,759 INFO L225 Difference]: With dead ends: 380 [2023-12-24 23:55:07,759 INFO L226 Difference]: Without dead ends: 372 [2023-12-24 23:55:07,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:55:07,759 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 56 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:07,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 629 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:55:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-24 23:55:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 320. [2023-12-24 23:55:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.457680250783699) internal successors, (465), 319 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 23:55:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 465 transitions. [2023-12-24 23:55:07,845 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 465 transitions. Word has length 27 [2023-12-24 23:55:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:07,845 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 465 transitions. [2023-12-24 23:55:07,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 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 23:55:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 465 transitions. [2023-12-24 23:55:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:55:07,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:07,846 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:07,872 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:08,049 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 23:55:08,050 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:08,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:08,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1550946512, now seen corresponding path program 19 times [2023-12-24 23:55:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820671424] [2023-12-24 23:55:08,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:55:08,051 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 23:55:08,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:08,052 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 23:55:08,053 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 23:55:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:55:08,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:55:08,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 23:55:08,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 23:55:08,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:08,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820671424] [2023-12-24 23:55:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820671424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:08,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 23:55:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197183680] [2023-12-24 23:55:08,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:55:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:55:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:55:08,249 INFO L87 Difference]: Start difference. First operand 320 states and 465 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 23:55:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:08,462 INFO L93 Difference]: Finished difference Result 333 states and 479 transitions. [2023-12-24 23:55:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 23:55:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 27 [2023-12-24 23:55:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:08,464 INFO L225 Difference]: With dead ends: 333 [2023-12-24 23:55:08,464 INFO L226 Difference]: Without dead ends: 320 [2023-12-24 23:55:08,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:08,465 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:08,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 153 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-24 23:55:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2023-12-24 23:55:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.4603174603174602) internal successors, (460), 315 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 23:55:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 460 transitions. [2023-12-24 23:55:08,580 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 460 transitions. Word has length 27 [2023-12-24 23:55:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:08,580 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 460 transitions. [2023-12-24 23:55:08,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 23:55:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 460 transitions. [2023-12-24 23:55:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:55:08,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:08,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:08,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 23:55:08,783 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 23:55:08,784 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:08,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1446506014, now seen corresponding path program 20 times [2023-12-24 23:55:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869918547] [2023-12-24 23:55:08,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:55:08,784 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 23:55:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:08,785 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 23:55:08,812 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 23:55:08,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:55:08,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:08,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 23:55:08,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:55:09,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:55:09,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:09,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869918547] [2023-12-24 23:55:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869918547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:09,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:55:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474852133] [2023-12-24 23:55:09,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:55:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:55:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:09,276 INFO L87 Difference]: Start difference. First operand 316 states and 460 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 23:55:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:09,829 INFO L93 Difference]: Finished difference Result 436 states and 620 transitions. [2023-12-24 23:55:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 23:55:09,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 23:55:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:09,830 INFO L225 Difference]: With dead ends: 436 [2023-12-24 23:55:09,830 INFO L226 Difference]: Without dead ends: 345 [2023-12-24 23:55:09,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:55:09,831 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:09,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 212 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:55:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-12-24 23:55:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 324. [2023-12-24 23:55:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.4458204334365325) internal successors, (467), 323 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 23:55:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 467 transitions. [2023-12-24 23:55:09,925 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 467 transitions. Word has length 27 [2023-12-24 23:55:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:09,925 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 467 transitions. [2023-12-24 23:55:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 23:55:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 467 transitions. [2023-12-24 23:55:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:55:09,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:09,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:09,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-24 23:55:10,128 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 23:55:10,128 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1539073127, now seen corresponding path program 21 times [2023-12-24 23:55:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259993450] [2023-12-24 23:55:10,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:55:10,129 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 23:55:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:10,130 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 23:55:10,138 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 23:55:10,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:55:10,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:10,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:55:10,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:10,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:10,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:10,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259993450] [2023-12-24 23:55:10,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259993450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:10,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:10,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-12-24 23:55:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752837803] [2023-12-24 23:55:10,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 23:55:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 23:55:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-12-24 23:55:10,685 INFO L87 Difference]: Start difference. First operand 324 states and 467 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 23:55:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:11,340 INFO L93 Difference]: Finished difference Result 380 states and 536 transitions. [2023-12-24 23:55:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 23:55:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 27 [2023-12-24 23:55:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:11,343 INFO L225 Difference]: With dead ends: 380 [2023-12-24 23:55:11,343 INFO L226 Difference]: Without dead ends: 360 [2023-12-24 23:55:11,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:55:11,343 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:11,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 485 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:55:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-24 23:55:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 332. [2023-12-24 23:55:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.459214501510574) internal successors, (483), 331 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 23:55:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 483 transitions. [2023-12-24 23:55:11,440 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 483 transitions. Word has length 27 [2023-12-24 23:55:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:11,440 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 483 transitions. [2023-12-24 23:55:11,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 23:55:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 483 transitions. [2023-12-24 23:55:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 23:55:11,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:11,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:11,444 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 (35)] Ended with exit code 0 [2023-12-24 23:55:11,644 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 23:55:11,644 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:11,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1336907646, now seen corresponding path program 22 times [2023-12-24 23:55:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903374005] [2023-12-24 23:55:11,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:55:11,645 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 23:55:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:11,647 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 23:55:11,648 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 23:55:11,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:55:11,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:11,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 23:55:11,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:55:11,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:55:12,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:12,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903374005] [2023-12-24 23:55:12,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903374005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:12,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:12,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:55:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469492439] [2023-12-24 23:55:12,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:55:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:55:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:12,114 INFO L87 Difference]: Start difference. First operand 332 states and 483 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:12,522 INFO L93 Difference]: Finished difference Result 355 states and 505 transitions. [2023-12-24 23:55:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 23:55:12,522 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-24 23:55:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:12,530 INFO L225 Difference]: With dead ends: 355 [2023-12-24 23:55:12,531 INFO L226 Difference]: Without dead ends: 337 [2023-12-24 23:55:12,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-24 23:55:12,532 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:12,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 219 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-24 23:55:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2023-12-24 23:55:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.4229607250755287) internal successors, (471), 331 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 23:55:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 471 transitions. [2023-12-24 23:55:12,633 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 471 transitions. Word has length 27 [2023-12-24 23:55:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:12,633 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 471 transitions. [2023-12-24 23:55:12,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 471 transitions. [2023-12-24 23:55:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 23:55:12,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:12,633 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:12,639 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 23:55:12,836 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 23:55:12,836 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:12,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 405640589, now seen corresponding path program 23 times [2023-12-24 23:55:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:12,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35248660] [2023-12-24 23:55:12,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:55:12,837 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 23:55:12,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:12,838 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 23:55:12,839 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 23:55:12,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-24 23:55:12,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:12,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 23:55:12,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:13,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:15,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35248660] [2023-12-24 23:55:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35248660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:15,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:15,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-24 23:55:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671363359] [2023-12-24 23:55:15,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:15,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 23:55:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 23:55:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:55:15,314 INFO L87 Difference]: Start difference. First operand 332 states and 471 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:55:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:20,333 INFO L93 Difference]: Finished difference Result 602 states and 818 transitions. [2023-12-24 23:55:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-24 23:55:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 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 28 [2023-12-24 23:55:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:20,338 INFO L225 Difference]: With dead ends: 602 [2023-12-24 23:55:20,338 INFO L226 Difference]: Without dead ends: 570 [2023-12-24 23:55:20,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=597, Invalid=2265, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 23:55:20,339 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 125 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:20,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 482 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 23:55:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-24 23:55:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 435. [2023-12-24 23:55:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.4308755760368663) internal successors, (621), 434 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 23:55:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 621 transitions. [2023-12-24 23:55:20,531 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 621 transitions. Word has length 28 [2023-12-24 23:55:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:20,532 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 621 transitions. [2023-12-24 23:55:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:55:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 621 transitions. [2023-12-24 23:55:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 23:55:20,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:20,532 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:20,535 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:20,735 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 23:55:20,735 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:20,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -386218118, now seen corresponding path program 24 times [2023-12-24 23:55:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402069696] [2023-12-24 23:55:20,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:55:20,736 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 23:55:20,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:20,737 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 23:55:20,766 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 23:55:20,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-24 23:55:20,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:20,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:55:20,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:21,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:22,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:22,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402069696] [2023-12-24 23:55:22,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402069696] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:22,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:22,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 23:55:22,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115573565] [2023-12-24 23:55:22,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:22,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:55:22,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:55:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:55:22,547 INFO L87 Difference]: Start difference. First operand 435 states and 621 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:55:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:25,214 INFO L93 Difference]: Finished difference Result 563 states and 760 transitions. [2023-12-24 23:55:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 23:55:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 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 28 [2023-12-24 23:55:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:25,217 INFO L225 Difference]: With dead ends: 563 [2023-12-24 23:55:25,217 INFO L226 Difference]: Without dead ends: 547 [2023-12-24 23:55:25,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=384, Invalid=1778, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 23:55:25,218 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 131 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:25,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 524 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:55:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-24 23:55:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 420. [2023-12-24 23:55:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.4343675417661097) internal successors, (601), 419 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 23:55:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 601 transitions. [2023-12-24 23:55:25,385 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 601 transitions. Word has length 28 [2023-12-24 23:55:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:25,385 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 601 transitions. [2023-12-24 23:55:25,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:55:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 601 transitions. [2023-12-24 23:55:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 23:55:25,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:25,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:25,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:25,590 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 23:55:25,590 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1838398290, now seen corresponding path program 25 times [2023-12-24 23:55:25,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:25,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087774054] [2023-12-24 23:55:25,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:55:25,591 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 23:55:25,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:25,592 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 23:55:25,593 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 23:55:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:55:25,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 23:55:25,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:25,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:25,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087774054] [2023-12-24 23:55:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087774054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:25,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:55:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719590901] [2023-12-24 23:55:25,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:25,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:55:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:55:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:25,801 INFO L87 Difference]: Start difference. First operand 420 states and 601 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 23:55:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:26,936 INFO L93 Difference]: Finished difference Result 861 states and 1273 transitions. [2023-12-24 23:55:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 23:55:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 28 [2023-12-24 23:55:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:26,938 INFO L225 Difference]: With dead ends: 861 [2023-12-24 23:55:26,938 INFO L226 Difference]: Without dead ends: 624 [2023-12-24 23:55:26,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 23:55:26,939 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 103 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:26,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 238 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:55:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-24 23:55:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 428. [2023-12-24 23:55:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4309133489461359) internal successors, (611), 427 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 23:55:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 611 transitions. [2023-12-24 23:55:27,114 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 611 transitions. Word has length 28 [2023-12-24 23:55:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:27,114 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 611 transitions. [2023-12-24 23:55:27,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 23:55:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 611 transitions. [2023-12-24 23:55:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 23:55:27,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:27,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:27,118 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 (39)] Ended with exit code 0 [2023-12-24 23:55:27,318 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 23:55:27,318 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:27,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash -271272933, now seen corresponding path program 26 times [2023-12-24 23:55:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:27,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700333771] [2023-12-24 23:55:27,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:55:27,319 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 23:55:27,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:27,320 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 23:55:27,321 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 23:55:27,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:55:27,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:27,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 23:55:27,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:27,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:27,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700333771] [2023-12-24 23:55:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700333771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:27,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:27,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 23:55:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841828612] [2023-12-24 23:55:27,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:55:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:55:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:55:27,550 INFO L87 Difference]: Start difference. First operand 428 states and 611 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 23:55:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:28,684 INFO L93 Difference]: Finished difference Result 578 states and 790 transitions. [2023-12-24 23:55:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 23:55:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 28 [2023-12-24 23:55:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:28,686 INFO L225 Difference]: With dead ends: 578 [2023-12-24 23:55:28,686 INFO L226 Difference]: Without dead ends: 573 [2023-12-24 23:55:28,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 23:55:28,687 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 126 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:28,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 189 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-24 23:55:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 442. [2023-12-24 23:55:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.4444444444444444) internal successors, (637), 441 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 23:55:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 637 transitions. [2023-12-24 23:55:28,870 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 637 transitions. Word has length 28 [2023-12-24 23:55:28,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:28,871 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 637 transitions. [2023-12-24 23:55:28,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 23:55:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 637 transitions. [2023-12-24 23:55:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-24 23:55:28,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:28,871 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:28,874 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 23:55:29,075 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 23:55:29,076 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:29,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash 356864972, now seen corresponding path program 27 times [2023-12-24 23:55:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462734261] [2023-12-24 23:55:29,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:55:29,077 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 23:55:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:29,077 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 23:55:29,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 23:55:29,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:55:29,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:29,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:55:29,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:29,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:29,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462734261] [2023-12-24 23:55:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462734261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:29,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2023-12-24 23:55:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949372939] [2023-12-24 23:55:29,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 23:55:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 23:55:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:55:29,687 INFO L87 Difference]: Start difference. First operand 442 states and 637 transitions. Second operand has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:55:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:30,646 INFO L93 Difference]: Finished difference Result 530 states and 748 transitions. [2023-12-24 23:55:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:55:30,646 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 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 23:55:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:30,648 INFO L225 Difference]: With dead ends: 530 [2023-12-24 23:55:30,648 INFO L226 Difference]: Without dead ends: 522 [2023-12-24 23:55:30,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=1518, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 23:55:30,648 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 68 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 744 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:55:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-24 23:55:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 469. [2023-12-24 23:55:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.4444444444444444) internal successors, (676), 468 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:55:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 676 transitions. [2023-12-24 23:55:30,843 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 676 transitions. Word has length 29 [2023-12-24 23:55:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:30,844 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 676 transitions. [2023-12-24 23:55:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:55:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 676 transitions. [2023-12-24 23:55:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-24 23:55:30,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:30,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:30,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:31,047 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 23:55:31,048 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:31,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1140515024, now seen corresponding path program 28 times [2023-12-24 23:55:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163898026] [2023-12-24 23:55:31,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:55:31,048 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 23:55:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:31,049 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 23:55:31,050 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 (42)] Waiting until timeout for monitored process [2023-12-24 23:55:31,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:55:31,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:31,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 23:55:31,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:31,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:31,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163898026] [2023-12-24 23:55:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163898026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:31,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-12-24 23:55:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484367693] [2023-12-24 23:55:31,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:31,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 23:55:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 23:55:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:55:31,792 INFO L87 Difference]: Start difference. First operand 469 states and 676 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 23:55:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:32,704 INFO L93 Difference]: Finished difference Result 523 states and 742 transitions. [2023-12-24 23:55:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 23:55:32,704 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 29 [2023-12-24 23:55:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:32,706 INFO L225 Difference]: With dead ends: 523 [2023-12-24 23:55:32,706 INFO L226 Difference]: Without dead ends: 502 [2023-12-24 23:55:32,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=1581, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 23:55:32,707 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 54 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:32,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 678 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:55:32,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-24 23:55:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 476. [2023-12-24 23:55:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.454736842105263) internal successors, (691), 475 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 23:55:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 691 transitions. [2023-12-24 23:55:32,920 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 691 transitions. Word has length 29 [2023-12-24 23:55:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:32,920 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 691 transitions. [2023-12-24 23:55:32,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 23:55:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 691 transitions. [2023-12-24 23:55:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-24 23:55:32,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:32,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:32,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:33,124 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 23:55:33,124 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:33,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 209665996, now seen corresponding path program 29 times [2023-12-24 23:55:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391906437] [2023-12-24 23:55:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:55:33,125 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 23:55:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:33,126 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 23:55:33,130 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 23:55:33,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-24 23:55:33,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:33,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 23:55:33,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:55:33,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:55:33,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:33,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391906437] [2023-12-24 23:55:33,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391906437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:33,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:33,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2023-12-24 23:55:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107398379] [2023-12-24 23:55:33,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:33,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 23:55:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 23:55:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2023-12-24 23:55:33,721 INFO L87 Difference]: Start difference. First operand 476 states and 691 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:55:34,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:34,443 INFO L93 Difference]: Finished difference Result 518 states and 746 transitions. [2023-12-24 23:55:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 23:55:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 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 23:55:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:34,444 INFO L225 Difference]: With dead ends: 518 [2023-12-24 23:55:34,444 INFO L226 Difference]: Without dead ends: 513 [2023-12-24 23:55:34,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 23:55:34,445 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:34,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 460 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:55:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-24 23:55:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 501. [2023-12-24 23:55:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.452) internal successors, (726), 500 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 23:55:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 726 transitions. [2023-12-24 23:55:34,676 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 726 transitions. Word has length 29 [2023-12-24 23:55:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:34,676 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 726 transitions. [2023-12-24 23:55:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:55:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 726 transitions. [2023-12-24 23:55:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 23:55:34,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:34,677 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:34,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:34,880 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 23:55:34,881 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:34,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1917604282, now seen corresponding path program 30 times [2023-12-24 23:55:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502766142] [2023-12-24 23:55:34,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:55:34,881 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 23:55:34,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:34,882 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 23:55:34,884 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 23:55:34,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-24 23:55:34,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:34,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 23:55:34,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:37,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:55:39,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502766142] [2023-12-24 23:55:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502766142] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:39,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-24 23:55:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13364090] [2023-12-24 23:55:39,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 23:55:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 23:55:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-12-24 23:55:39,944 INFO L87 Difference]: Start difference. First operand 501 states and 726 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 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 23:55:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:44,307 INFO L93 Difference]: Finished difference Result 725 states and 983 transitions. [2023-12-24 23:55:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 23:55:44,308 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 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 30 [2023-12-24 23:55:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:44,310 INFO L225 Difference]: With dead ends: 725 [2023-12-24 23:55:44,310 INFO L226 Difference]: Without dead ends: 691 [2023-12-24 23:55:44,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 23:55:44,319 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 171 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:44,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 529 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 23:55:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-24 23:55:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 530. [2023-12-24 23:55:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.449905482041588) internal successors, (767), 529 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 23:55:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 767 transitions. [2023-12-24 23:55:44,572 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 767 transitions. Word has length 30 [2023-12-24 23:55:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:44,572 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 767 transitions. [2023-12-24 23:55:44,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 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 23:55:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 767 transitions. [2023-12-24 23:55:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 23:55:44,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:44,573 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:44,577 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 23:55:44,775 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 23:55:44,776 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:44,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2061096389, now seen corresponding path program 31 times [2023-12-24 23:55:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549300638] [2023-12-24 23:55:44,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:55:44,777 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 23:55:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:44,778 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 23:55:44,812 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 23:55:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:55:44,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 23:55:44,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:44,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:45,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549300638] [2023-12-24 23:55:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549300638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:45,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:45,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-24 23:55:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110800464] [2023-12-24 23:55:45,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 23:55:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 23:55:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-12-24 23:55:45,051 INFO L87 Difference]: Start difference. First operand 530 states and 767 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:45,589 INFO L93 Difference]: Finished difference Result 566 states and 805 transitions. [2023-12-24 23:55:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:55:45,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 23:55:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:45,591 INFO L225 Difference]: With dead ends: 566 [2023-12-24 23:55:45,591 INFO L226 Difference]: Without dead ends: 553 [2023-12-24 23:55:45,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-12-24 23:55:45,591 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:45,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 278 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-24 23:55:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 545. [2023-12-24 23:55:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.4375) internal successors, (782), 544 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 23:55:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 782 transitions. [2023-12-24 23:55:45,856 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 782 transitions. Word has length 30 [2023-12-24 23:55:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:45,856 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 782 transitions. [2023-12-24 23:55:45,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 782 transitions. [2023-12-24 23:55:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 23:55:45,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:45,857 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:45,862 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:46,060 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 23:55:46,060 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -724850578, now seen corresponding path program 32 times [2023-12-24 23:55:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:46,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68802986] [2023-12-24 23:55:46,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:55:46,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:55:46,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:46,062 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 23:55:46,087 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 23:55:46,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:55:46,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:46,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 23:55:46,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:46,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-24 23:55:46,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68802986] [2023-12-24 23:55:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68802986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:46,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-24 23:55:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089029070] [2023-12-24 23:55:46,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 23:55:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 23:55:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-12-24 23:55:46,341 INFO L87 Difference]: Start difference. First operand 545 states and 782 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:46,854 INFO L93 Difference]: Finished difference Result 757 states and 1077 transitions. [2023-12-24 23:55:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:55:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 23:55:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:46,856 INFO L225 Difference]: With dead ends: 757 [2023-12-24 23:55:46,856 INFO L226 Difference]: Without dead ends: 597 [2023-12-24 23:55:46,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-12-24 23:55:46,857 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:46,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 268 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:55:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-24 23:55:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 590. [2023-12-24 23:55:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.4193548387096775) internal successors, (836), 589 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 23:55:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 836 transitions. [2023-12-24 23:55:47,150 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 836 transitions. Word has length 30 [2023-12-24 23:55:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:47,150 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 836 transitions. [2023-12-24 23:55:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 836 transitions. [2023-12-24 23:55:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:55:47,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:47,151 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:47,154 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 23:55:47,355 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 23:55:47,355 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:47,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2006090695, now seen corresponding path program 33 times [2023-12-24 23:55:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521968857] [2023-12-24 23:55:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:55:47,356 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 23:55:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:47,357 INFO L229 MonitoredProcess]: Starting monitored process 47 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 23:55:47,383 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 (47)] Waiting until timeout for monitored process [2023-12-24 23:55:47,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:55:47,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 23:55:47,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:47,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:55:48,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521968857] [2023-12-24 23:55:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521968857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:48,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:48,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 34 [2023-12-24 23:55:48,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206188008] [2023-12-24 23:55:48,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 23:55:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 23:55:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 23:55:48,064 INFO L87 Difference]: Start difference. First operand 590 states and 836 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:55:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:49,138 INFO L93 Difference]: Finished difference Result 700 states and 970 transitions. [2023-12-24 23:55:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:55:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 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 23:55:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:49,141 INFO L225 Difference]: With dead ends: 700 [2023-12-24 23:55:49,141 INFO L226 Difference]: Without dead ends: 692 [2023-12-24 23:55:49,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1847, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 23:55:49,141 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 79 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:49,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 828 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:55:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-24 23:55:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 626. [2023-12-24 23:55:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.4144) internal successors, (884), 625 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 23:55:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 884 transitions. [2023-12-24 23:55:49,458 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 884 transitions. Word has length 31 [2023-12-24 23:55:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:49,458 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 884 transitions. [2023-12-24 23:55:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:55:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 884 transitions. [2023-12-24 23:55:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:55:49,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:49,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:49,465 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:55:49,665 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:49,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054649, now seen corresponding path program 34 times [2023-12-24 23:55:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011527965] [2023-12-24 23:55:49,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:55:49,666 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 23:55:49,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:49,667 INFO L229 MonitoredProcess]: Starting monitored process 48 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 23:55:49,667 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 (48)] Waiting until timeout for monitored process [2023-12-24 23:55:49,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:55:49,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:49,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:55:49,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:49,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:55:50,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:50,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011527965] [2023-12-24 23:55:50,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011527965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:50,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:50,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2023-12-24 23:55:50,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325742880] [2023-12-24 23:55:50,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:50,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 23:55:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 23:55:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1236, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:55:50,554 INFO L87 Difference]: Start difference. First operand 626 states and 884 transitions. Second operand has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 37 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:51,874 INFO L93 Difference]: Finished difference Result 707 states and 977 transitions. [2023-12-24 23:55:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:55:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 37 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-24 23:55:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:51,876 INFO L225 Difference]: With dead ends: 707 [2023-12-24 23:55:51,876 INFO L226 Difference]: Without dead ends: 685 [2023-12-24 23:55:51,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=2006, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 23:55:51,877 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:51,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 891 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:55:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-24 23:55:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 633. [2023-12-24 23:55:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.4224683544303798) internal successors, (899), 632 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 23:55:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 899 transitions. [2023-12-24 23:55:52,197 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 899 transitions. Word has length 31 [2023-12-24 23:55:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:52,197 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 899 transitions. [2023-12-24 23:55:52,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 37 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:55:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 899 transitions. [2023-12-24 23:55:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:55:52,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:52,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:52,206 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:55:52,401 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:52,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1008538498, now seen corresponding path program 35 times [2023-12-24 23:55:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:52,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295452939] [2023-12-24 23:55:52,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:55:52,402 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 23:55:52,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:52,403 INFO L229 MonitoredProcess]: Starting monitored process 49 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 23:55:52,404 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 (49)] Waiting until timeout for monitored process [2023-12-24 23:55:52,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-24 23:55:52,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:52,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 23:55:52,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-24 23:55:53,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-24 23:55:54,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295452939] [2023-12-24 23:55:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295452939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:54,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:55:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839236340] [2023-12-24 23:55:54,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:55:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:55:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:55:54,084 INFO L87 Difference]: Start difference. First operand 633 states and 899 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 23:55:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:55,895 INFO L93 Difference]: Finished difference Result 813 states and 1139 transitions. [2023-12-24 23:55:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 23:55:55,896 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 31 [2023-12-24 23:55:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:55,898 INFO L225 Difference]: With dead ends: 813 [2023-12-24 23:55:55,898 INFO L226 Difference]: Without dead ends: 689 [2023-12-24 23:55:55,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2023-12-24 23:55:55,899 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 134 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:55,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 244 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:55:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-24 23:55:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 658. [2023-12-24 23:55:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.4048706240487063) internal successors, (923), 657 states have internal predecessors, (923), 0 states have call successors, (0), 0 states 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 23:55:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 923 transitions. [2023-12-24 23:55:56,253 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 923 transitions. Word has length 31 [2023-12-24 23:55:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:56,253 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 923 transitions. [2023-12-24 23:55:56,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 23:55:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 923 transitions. [2023-12-24 23:55:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:55:56,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:56,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:56,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:55:56,457 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:56,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2143968199, now seen corresponding path program 36 times [2023-12-24 23:55:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061047912] [2023-12-24 23:55:56,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:55:56,458 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 23:55:56,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:56,459 INFO L229 MonitoredProcess]: Starting monitored process 50 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 23:55:56,460 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 (50)] Waiting until timeout for monitored process [2023-12-24 23:55:56,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-24 23:55:56,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:55:56,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:55:56,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 23:55:56,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:55:57,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061047912] [2023-12-24 23:55:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061047912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:57,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 31 [2023-12-24 23:55:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799091646] [2023-12-24 23:55:57,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:57,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 23:55:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 23:55:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:55:57,254 INFO L87 Difference]: Start difference. First operand 658 states and 923 transitions. Second operand has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 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 23:55:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:55:58,331 INFO L93 Difference]: Finished difference Result 712 states and 990 transitions. [2023-12-24 23:55:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 23:55:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 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 31 [2023-12-24 23:55:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:55:58,333 INFO L225 Difference]: With dead ends: 712 [2023-12-24 23:55:58,333 INFO L226 Difference]: Without dead ends: 689 [2023-12-24 23:55:58,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 23:55:58,334 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:58,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 585 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:55:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-24 23:55:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 664. [2023-12-24 23:55:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.411764705882353) internal successors, (936), 663 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 23:55:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 936 transitions. [2023-12-24 23:55:58,673 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 936 transitions. Word has length 31 [2023-12-24 23:55:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:55:58,673 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 936 transitions. [2023-12-24 23:55:58,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 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 23:55:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 936 transitions. [2023-12-24 23:55:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 23:55:58,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:55:58,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:55:58,677 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:55:58,877 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:55:58,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:55:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -479131682, now seen corresponding path program 37 times [2023-12-24 23:55:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:55:58,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279002346] [2023-12-24 23:55:58,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:55:58,878 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 23:55:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:55:58,879 INFO L229 MonitoredProcess]: Starting monitored process 51 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 23:55:58,880 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 (51)] Waiting until timeout for monitored process [2023-12-24 23:55:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:55:58,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:55:58,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:55:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-24 23:55:59,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:55:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-24 23:55:59,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:55:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279002346] [2023-12-24 23:55:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279002346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:55:59,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:55:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:55:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009496624] [2023-12-24 23:55:59,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:55:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:55:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:55:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:55:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:55:59,878 INFO L87 Difference]: Start difference. First operand 664 states and 936 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:56:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:01,107 INFO L93 Difference]: Finished difference Result 692 states and 963 transitions. [2023-12-24 23:56:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:56:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 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 23:56:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:01,109 INFO L225 Difference]: With dead ends: 692 [2023-12-24 23:56:01,109 INFO L226 Difference]: Without dead ends: 669 [2023-12-24 23:56:01,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-24 23:56:01,110 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:01,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 384 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:56:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-24 23:56:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 664. [2023-12-24 23:56:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.3755656108597285) internal successors, (912), 663 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 23:56:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 912 transitions. [2023-12-24 23:56:01,459 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 912 transitions. Word has length 31 [2023-12-24 23:56:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:01,460 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 912 transitions. [2023-12-24 23:56:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:56:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 912 transitions. [2023-12-24 23:56:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-24 23:56:01,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:01,461 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:01,464 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 (51)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:01,664 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1680422637, now seen corresponding path program 38 times [2023-12-24 23:56:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610784768] [2023-12-24 23:56:01,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:56:01,665 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 23:56:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:01,666 INFO L229 MonitoredProcess]: Starting monitored process 52 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 23:56:01,667 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 (52)] Waiting until timeout for monitored process [2023-12-24 23:56:01,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:56:01,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:01,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 23:56:01,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:02,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:05,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610784768] [2023-12-24 23:56:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610784768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:05,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-24 23:56:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092220833] [2023-12-24 23:56:05,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:05,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 23:56:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 23:56:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2023-12-24 23:56:05,285 INFO L87 Difference]: Start difference. First operand 664 states and 912 transitions. Second operand has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:56:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:10,159 INFO L93 Difference]: Finished difference Result 989 states and 1274 transitions. [2023-12-24 23:56:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-24 23:56:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-24 23:56:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:10,163 INFO L225 Difference]: With dead ends: 989 [2023-12-24 23:56:10,163 INFO L226 Difference]: Without dead ends: 951 [2023-12-24 23:56:10,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=503, Invalid=2689, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 23:56:10,177 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 140 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:10,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 954 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 23:56:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-12-24 23:56:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 695. [2023-12-24 23:56:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 1.3731988472622478) internal successors, (953), 694 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 23:56:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 953 transitions. [2023-12-24 23:56:10,565 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 953 transitions. Word has length 32 [2023-12-24 23:56:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:10,565 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 953 transitions. [2023-12-24 23:56:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:56:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 953 transitions. [2023-12-24 23:56:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-24 23:56:10,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:10,566 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:10,578 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:10,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:10,770 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:10,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 913416602, now seen corresponding path program 39 times [2023-12-24 23:56:10,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025880816] [2023-12-24 23:56:10,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:56:10,770 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 23:56:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:10,771 INFO L229 MonitoredProcess]: Starting monitored process 53 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 23:56:10,773 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 (53)] Waiting until timeout for monitored process [2023-12-24 23:56:10,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-24 23:56:10,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:10,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 23:56:10,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:11,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:14,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025880816] [2023-12-24 23:56:14,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025880816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:14,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:14,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-24 23:56:14,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227231472] [2023-12-24 23:56:14,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:14,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 23:56:14,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 23:56:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2023-12-24 23:56:14,617 INFO L87 Difference]: Start difference. First operand 695 states and 953 transitions. Second operand has 32 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 23:56:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:20,832 INFO L93 Difference]: Finished difference Result 981 states and 1259 transitions. [2023-12-24 23:56:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 23:56:20,834 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 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 23:56:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:20,836 INFO L225 Difference]: With dead ends: 981 [2023-12-24 23:56:20,837 INFO L226 Difference]: Without dead ends: 962 [2023-12-24 23:56:20,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=573, Invalid=3087, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 23:56:20,842 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 172 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:20,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 730 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 23:56:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-24 23:56:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 638. [2023-12-24 23:56:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.3689167974882261) internal successors, (872), 637 states have internal predecessors, (872), 0 states have call successors, (0), 0 states 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 23:56:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 872 transitions. [2023-12-24 23:56:21,241 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 872 transitions. Word has length 32 [2023-12-24 23:56:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:21,241 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 872 transitions. [2023-12-24 23:56:21,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 23:56:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 872 transitions. [2023-12-24 23:56:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-24 23:56:21,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:21,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:21,245 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 (53)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:21,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:21,445 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:21,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:21,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1981187314, now seen corresponding path program 40 times [2023-12-24 23:56:21,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:21,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344536916] [2023-12-24 23:56:21,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:56:21,445 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 23:56:21,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:21,447 INFO L229 MonitoredProcess]: Starting monitored process 54 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 23:56:21,447 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 (54)] Waiting until timeout for monitored process [2023-12-24 23:56:21,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:56:21,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:21,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 23:56:21,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:56:21,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:56:21,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344536916] [2023-12-24 23:56:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344536916] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:21,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:56:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553642730] [2023-12-24 23:56:21,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:56:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:56:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:56:21,829 INFO L87 Difference]: Start difference. First operand 638 states and 872 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 23:56:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:25,402 INFO L93 Difference]: Finished difference Result 1323 states and 1880 transitions. [2023-12-24 23:56:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 23:56:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 32 [2023-12-24 23:56:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:25,415 INFO L225 Difference]: With dead ends: 1323 [2023-12-24 23:56:25,415 INFO L226 Difference]: Without dead ends: 946 [2023-12-24 23:56:25,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=556, Invalid=1894, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 23:56:25,416 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 215 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 257 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:56:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-24 23:56:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 647. [2023-12-24 23:56:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.36687306501548) internal successors, (883), 646 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 23:56:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 883 transitions. [2023-12-24 23:56:25,821 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 883 transitions. Word has length 32 [2023-12-24 23:56:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:25,822 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 883 transitions. [2023-12-24 23:56:25,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 23:56:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 883 transitions. [2023-12-24 23:56:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-24 23:56:25,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:25,823 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:25,828 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 (54)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:26,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:26,026 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:26,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1058464599, now seen corresponding path program 41 times [2023-12-24 23:56:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975424] [2023-12-24 23:56:26,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:56:26,027 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 23:56:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:26,028 INFO L229 MonitoredProcess]: Starting monitored process 55 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 23:56:26,046 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 (55)] Waiting until timeout for monitored process [2023-12-24 23:56:26,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-24 23:56:26,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:26,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 23:56:26,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:56:26,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:56:26,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975424] [2023-12-24 23:56:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:26,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 23:56:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862484041] [2023-12-24 23:56:26,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 23:56:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 23:56:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-24 23:56:26,349 INFO L87 Difference]: Start difference. First operand 647 states and 883 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 23:56:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:30,110 INFO L93 Difference]: Finished difference Result 849 states and 1125 transitions. [2023-12-24 23:56:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 23:56:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 32 [2023-12-24 23:56:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:30,113 INFO L225 Difference]: With dead ends: 849 [2023-12-24 23:56:30,113 INFO L226 Difference]: Without dead ends: 844 [2023-12-24 23:56:30,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=556, Invalid=1894, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 23:56:30,117 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 225 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:30,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 279 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:56:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-12-24 23:56:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 637. [2023-12-24 23:56:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.3946540880503144) internal successors, (887), 636 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 23:56:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 887 transitions. [2023-12-24 23:56:30,511 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 887 transitions. Word has length 32 [2023-12-24 23:56:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:30,511 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 887 transitions. [2023-12-24 23:56:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 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 23:56:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 887 transitions. [2023-12-24 23:56:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 23:56:30,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:30,512 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:30,515 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 (55)] Ended with exit code 0 [2023-12-24 23:56:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:30,716 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:30,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1990835628, now seen corresponding path program 42 times [2023-12-24 23:56:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:30,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307836005] [2023-12-24 23:56:30,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:56:30,716 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 23:56:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:30,717 INFO L229 MonitoredProcess]: Starting monitored process 56 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 23:56:30,718 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 (56)] Waiting until timeout for monitored process [2023-12-24 23:56:30,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-24 23:56:30,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:30,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 23:56:30,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:56:31,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:56:31,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307836005] [2023-12-24 23:56:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307836005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:31,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:31,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 37 [2023-12-24 23:56:31,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360251596] [2023-12-24 23:56:31,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:31,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 23:56:31,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 23:56:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:56:31,575 INFO L87 Difference]: Start difference. First operand 637 states and 887 transitions. Second operand has 37 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 23:56:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:32,919 INFO L93 Difference]: Finished difference Result 738 states and 1015 transitions. [2023-12-24 23:56:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 23:56:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 37 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) Word has length 33 [2023-12-24 23:56:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:32,922 INFO L225 Difference]: With dead ends: 738 [2023-12-24 23:56:32,922 INFO L226 Difference]: Without dead ends: 730 [2023-12-24 23:56:32,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 23:56:32,922 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 85 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:32,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 888 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:56:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-24 23:56:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 669. [2023-12-24 23:56:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.3937125748502994) internal successors, (931), 668 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 23:56:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 931 transitions. [2023-12-24 23:56:33,329 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 931 transitions. Word has length 33 [2023-12-24 23:56:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:33,329 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 931 transitions. [2023-12-24 23:56:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 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 23:56:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 931 transitions. [2023-12-24 23:56:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 23:56:33,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:33,330 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:33,333 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 (56)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:33,532 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:33,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1192631280, now seen corresponding path program 43 times [2023-12-24 23:56:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522559617] [2023-12-24 23:56:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:56:33,533 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 23:56:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:33,535 INFO L229 MonitoredProcess]: Starting monitored process 57 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 23:56:33,536 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 (57)] Waiting until timeout for monitored process [2023-12-24 23:56:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:56:33,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 23:56:33,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:56:33,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:56:34,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:34,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522559617] [2023-12-24 23:56:34,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522559617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:34,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:34,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2023-12-24 23:56:34,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399157251] [2023-12-24 23:56:34,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-24 23:56:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-24 23:56:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1534, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 23:56:34,612 INFO L87 Difference]: Start difference. First operand 669 states and 931 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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 23:56:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:36,144 INFO L93 Difference]: Finished difference Result 724 states and 997 transitions. [2023-12-24 23:56:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:56:36,145 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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 33 [2023-12-24 23:56:36,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:36,146 INFO L225 Difference]: With dead ends: 724 [2023-12-24 23:56:36,147 INFO L226 Difference]: Without dead ends: 701 [2023-12-24 23:56:36,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=2481, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 23:56:36,153 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:36,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1055 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 23:56:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-12-24 23:56:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 675. [2023-12-24 23:56:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.400593471810089) internal successors, (944), 674 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 23:56:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 944 transitions. [2023-12-24 23:56:36,566 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 944 transitions. Word has length 33 [2023-12-24 23:56:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:36,566 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 944 transitions. [2023-12-24 23:56:36,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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 23:56:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 944 transitions. [2023-12-24 23:56:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 23:56:36,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:36,567 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:36,573 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 (57)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:36,771 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:36,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1003734612, now seen corresponding path program 44 times [2023-12-24 23:56:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:36,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735539937] [2023-12-24 23:56:36,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:56:36,772 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 23:56:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:36,773 INFO L229 MonitoredProcess]: Starting monitored process 58 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 23:56:36,792 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 (58)] Waiting until timeout for monitored process [2023-12-24 23:56:36,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:56:36,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:36,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:56:36,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:56:37,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:56:37,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735539937] [2023-12-24 23:56:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735539937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:37,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2023-12-24 23:56:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431012323] [2023-12-24 23:56:37,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:37,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 23:56:37,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 23:56:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=971, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:56:37,653 INFO L87 Difference]: Start difference. First operand 675 states and 944 transitions. Second operand has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:56:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:38,968 INFO L93 Difference]: Finished difference Result 737 states and 1018 transitions. [2023-12-24 23:56:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:56:38,968 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 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 23:56:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:38,970 INFO L225 Difference]: With dead ends: 737 [2023-12-24 23:56:38,970 INFO L226 Difference]: Without dead ends: 713 [2023-12-24 23:56:38,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 23:56:38,971 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:38,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 763 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:56:38,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-24 23:56:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 679. [2023-12-24 23:56:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.4085545722713864) internal successors, (955), 678 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 23:56:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 955 transitions. [2023-12-24 23:56:39,382 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 955 transitions. Word has length 33 [2023-12-24 23:56:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:39,382 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 955 transitions. [2023-12-24 23:56:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:56:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 955 transitions. [2023-12-24 23:56:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 23:56:39,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:39,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:39,388 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 (58)] Forceful destruction successful, exit code 0 [2023-12-24 23:56:39,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:39,586 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:39,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1518143472, now seen corresponding path program 45 times [2023-12-24 23:56:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:39,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494918706] [2023-12-24 23:56:39,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:56:39,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:56:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:39,589 INFO L229 MonitoredProcess]: Starting monitored process 59 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 23:56:39,590 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 (59)] Waiting until timeout for monitored process [2023-12-24 23:56:39,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-24 23:56:39,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:39,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 23:56:39,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-24 23:56:39,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-24 23:56:40,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494918706] [2023-12-24 23:56:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494918706] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:40,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:40,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-12-24 23:56:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033700686] [2023-12-24 23:56:40,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:40,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 23:56:40,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 23:56:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 23:56:40,439 INFO L87 Difference]: Start difference. First operand 679 states and 955 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 23:56:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:56:41,605 INFO L93 Difference]: Finished difference Result 720 states and 1009 transitions. [2023-12-24 23:56:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 23:56:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 23:56:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:56:41,607 INFO L225 Difference]: With dead ends: 720 [2023-12-24 23:56:41,607 INFO L226 Difference]: Without dead ends: 715 [2023-12-24 23:56:41,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 23:56:41,608 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:56:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 549 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:56:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-24 23:56:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 700. [2023-12-24 23:56:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.4091559370529327) internal successors, (985), 699 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 23:56:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 985 transitions. [2023-12-24 23:56:42,037 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 985 transitions. Word has length 33 [2023-12-24 23:56:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:56:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 985 transitions. [2023-12-24 23:56:42,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 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 23:56:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 985 transitions. [2023-12-24 23:56:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 23:56:42,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:56:42,038 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:56:42,041 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 (59)] Ended with exit code 0 [2023-12-24 23:56:42,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:56:42,240 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:56:42,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:56:42,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1031087066, now seen corresponding path program 46 times [2023-12-24 23:56:42,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:56:42,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748781080] [2023-12-24 23:56:42,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:56:42,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:56:42,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:56:42,242 INFO L229 MonitoredProcess]: Starting monitored process 60 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 23:56:42,243 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 (60)] Waiting until timeout for monitored process [2023-12-24 23:56:42,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:56:42,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:56:42,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 23:56:42,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:56:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:45,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:56:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:56:50,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:56:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748781080] [2023-12-24 23:56:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748781080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:56:50,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:56:50,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2023-12-24 23:56:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085605317] [2023-12-24 23:56:50,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:56:50,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 23:56:50,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:56:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 23:56:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 23:56:50,468 INFO L87 Difference]: Start difference. First operand 700 states and 985 transitions. Second operand has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 36 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 23:57:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:00,383 INFO L93 Difference]: Finished difference Result 1051 states and 1382 transitions. [2023-12-24 23:57:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 23:57:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 36 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 34 [2023-12-24 23:57:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:00,386 INFO L225 Difference]: With dead ends: 1051 [2023-12-24 23:57:00,387 INFO L226 Difference]: Without dead ends: 1011 [2023-12-24 23:57:00,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=625, Invalid=3535, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 23:57:00,387 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 364 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:00,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1081 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 23:57:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-24 23:57:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 742. [2023-12-24 23:57:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.407557354925776) internal successors, (1043), 741 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 23:57:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1043 transitions. [2023-12-24 23:57:00,905 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1043 transitions. Word has length 34 [2023-12-24 23:57:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:00,905 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1043 transitions. [2023-12-24 23:57:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 36 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 23:57:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1043 transitions. [2023-12-24 23:57:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 23:57:00,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:00,906 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:00,913 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 (60)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:01,107 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:01,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:01,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1271263539, now seen corresponding path program 47 times [2023-12-24 23:57:01,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898349660] [2023-12-24 23:57:01,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:57:01,108 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 23:57:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:01,111 INFO L229 MonitoredProcess]: Starting monitored process 61 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 23:57:01,137 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 (61)] Waiting until timeout for monitored process [2023-12-24 23:57:01,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 23:57:01,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:01,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 23:57:01,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:57:02,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:57:11,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:11,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898349660] [2023-12-24 23:57:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898349660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:11,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-12-24 23:57:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516332114] [2023-12-24 23:57:11,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 23:57:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 23:57:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 23:57:11,472 INFO L87 Difference]: Start difference. First operand 742 states and 1043 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:57:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:36,397 INFO L93 Difference]: Finished difference Result 1164 states and 1556 transitions. [2023-12-24 23:57:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-24 23:57:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-24 23:57:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:36,400 INFO L225 Difference]: With dead ends: 1164 [2023-12-24 23:57:36,400 INFO L226 Difference]: Without dead ends: 1144 [2023-12-24 23:57:36,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=1705, Invalid=7997, Unknown=0, NotChecked=0, Total=9702 [2023-12-24 23:57:36,401 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 332 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:36,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 867 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 23:57:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2023-12-24 23:57:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 863. [2023-12-24 23:57:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 862 states have (on average 1.3816705336426913) internal successors, (1191), 862 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 23:57:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1191 transitions. [2023-12-24 23:57:37,034 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1191 transitions. Word has length 34 [2023-12-24 23:57:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:37,035 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1191 transitions. [2023-12-24 23:57:37,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:57:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1191 transitions. [2023-12-24 23:57:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 23:57:37,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:37,036 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:37,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:37,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:37,239 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:37,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash 211384951, now seen corresponding path program 48 times [2023-12-24 23:57:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268219361] [2023-12-24 23:57:37,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:57:37,240 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 23:57:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:37,241 INFO L229 MonitoredProcess]: Starting monitored process 62 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 23:57:37,242 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 (62)] Waiting until timeout for monitored process [2023-12-24 23:57:37,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-24 23:57:37,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:37,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 23:57:37,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:57:37,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:57:37,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:37,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268219361] [2023-12-24 23:57:37,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268219361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:37,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:37,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-24 23:57:37,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589779554] [2023-12-24 23:57:37,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:37,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:57:37,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:37,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:57:37,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:57:37,687 INFO L87 Difference]: Start difference. First operand 863 states and 1191 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:57:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:38,865 INFO L93 Difference]: Finished difference Result 918 states and 1249 transitions. [2023-12-24 23:57:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:57:38,866 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 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 23:57:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:38,868 INFO L225 Difference]: With dead ends: 918 [2023-12-24 23:57:38,868 INFO L226 Difference]: Without dead ends: 904 [2023-12-24 23:57:38,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:57:38,869 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:38,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 348 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:57:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-12-24 23:57:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 891. [2023-12-24 23:57:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.3707865168539326) internal successors, (1220), 890 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 23:57:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1220 transitions. [2023-12-24 23:57:39,560 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1220 transitions. Word has length 34 [2023-12-24 23:57:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:39,561 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1220 transitions. [2023-12-24 23:57:39,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:57:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1220 transitions. [2023-12-24 23:57:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 23:57:39,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:39,562 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:39,567 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 (62)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:39,765 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -48686258, now seen corresponding path program 49 times [2023-12-24 23:57:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028765010] [2023-12-24 23:57:39,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:57:39,766 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 23:57:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:39,767 INFO L229 MonitoredProcess]: Starting monitored process 63 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 23:57:39,768 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 (63)] Waiting until timeout for monitored process [2023-12-24 23:57:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:39,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:57:39,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:57:39,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:57:40,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028765010] [2023-12-24 23:57:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028765010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:40,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-24 23:57:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845711906] [2023-12-24 23:57:40,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:40,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:57:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:57:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:57:40,149 INFO L87 Difference]: Start difference. First operand 891 states and 1220 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:57:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:41,329 INFO L93 Difference]: Finished difference Result 1177 states and 1602 transitions. [2023-12-24 23:57:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:57:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 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 23:57:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:41,333 INFO L225 Difference]: With dead ends: 1177 [2023-12-24 23:57:41,333 INFO L226 Difference]: Without dead ends: 964 [2023-12-24 23:57:41,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:57:41,334 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 62 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:41,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 321 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:57:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-24 23:57:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 955. [2023-12-24 23:57:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.3553459119496856) internal successors, (1293), 954 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states 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 23:57:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1293 transitions. [2023-12-24 23:57:42,099 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1293 transitions. Word has length 34 [2023-12-24 23:57:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:42,099 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1293 transitions. [2023-12-24 23:57:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:57:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1293 transitions. [2023-12-24 23:57:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:57:42,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:42,101 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:42,106 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 (63)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:42,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:42,304 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:42,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1309739303, now seen corresponding path program 50 times [2023-12-24 23:57:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634352832] [2023-12-24 23:57:42,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:57:42,304 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 23:57:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:42,305 INFO L229 MonitoredProcess]: Starting monitored process 64 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 23:57:42,324 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 (64)] Waiting until timeout for monitored process [2023-12-24 23:57:42,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:57:42,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:42,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 23:57:42,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:57:42,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:57:43,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634352832] [2023-12-24 23:57:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634352832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:43,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 40 [2023-12-24 23:57:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473892043] [2023-12-24 23:57:43,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 23:57:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 23:57:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 23:57:43,291 INFO L87 Difference]: Start difference. First operand 955 states and 1293 transitions. Second operand has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:57:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:45,399 INFO L93 Difference]: Finished difference Result 1022 states and 1373 transitions. [2023-12-24 23:57:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 23:57:45,400 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-24 23:57:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:45,402 INFO L225 Difference]: With dead ends: 1022 [2023-12-24 23:57:45,402 INFO L226 Difference]: Without dead ends: 1014 [2023-12-24 23:57:45,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 23:57:45,403 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 91 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:45,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1289 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:57:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-12-24 23:57:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 975. [2023-12-24 23:57:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.3562628336755647) internal successors, (1321), 974 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states 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 23:57:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1321 transitions. [2023-12-24 23:57:46,161 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1321 transitions. Word has length 35 [2023-12-24 23:57:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:46,161 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1321 transitions. [2023-12-24 23:57:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:57:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1321 transitions. [2023-12-24 23:57:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:57:46,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:46,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:46,166 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 (64)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:46,366 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:46,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2112286503, now seen corresponding path program 51 times [2023-12-24 23:57:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804653270] [2023-12-24 23:57:46,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:57:46,368 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 23:57:46,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:46,369 INFO L229 MonitoredProcess]: Starting monitored process 65 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 23:57:46,384 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 (65)] Waiting until timeout for monitored process [2023-12-24 23:57:46,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:57:46,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:46,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 23:57:46,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:57:46,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:57:47,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:47,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804653270] [2023-12-24 23:57:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804653270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:47,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2023-12-24 23:57:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341912707] [2023-12-24 23:57:47,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:47,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 23:57:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 23:57:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1864, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 23:57:47,752 INFO L87 Difference]: Start difference. First operand 975 states and 1321 transitions. Second operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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 23:57:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:49,878 INFO L93 Difference]: Finished difference Result 1059 states and 1416 transitions. [2023-12-24 23:57:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 23:57:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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 35 [2023-12-24 23:57:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:49,885 INFO L225 Difference]: With dead ends: 1059 [2023-12-24 23:57:49,885 INFO L226 Difference]: Without dead ends: 1035 [2023-12-24 23:57:49,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=3006, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 23:57:49,886 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 89 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:49,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1197 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:57:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-24 23:57:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 981. [2023-12-24 23:57:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.3612244897959183) internal successors, (1334), 980 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states 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 23:57:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1334 transitions. [2023-12-24 23:57:50,658 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1334 transitions. Word has length 35 [2023-12-24 23:57:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:50,658 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1334 transitions. [2023-12-24 23:57:50,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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 23:57:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1334 transitions. [2023-12-24 23:57:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:57:50,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:50,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:50,665 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 (65)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:50,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:50,863 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:50,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1988186407, now seen corresponding path program 52 times [2023-12-24 23:57:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:50,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966744937] [2023-12-24 23:57:50,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:57:50,877 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 23:57:50,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:50,880 INFO L229 MonitoredProcess]: Starting monitored process 66 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 23:57:50,881 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 (66)] Waiting until timeout for monitored process [2023-12-24 23:57:50,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:57:50,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:50,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 23:57:50,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:57:51,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:57:52,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966744937] [2023-12-24 23:57:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966744937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:52,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 36 [2023-12-24 23:57:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717786336] [2023-12-24 23:57:52,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:52,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 23:57:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:52,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 23:57:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 23:57:52,068 INFO L87 Difference]: Start difference. First operand 981 states and 1334 transitions. Second operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 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 23:57:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:54,017 INFO L93 Difference]: Finished difference Result 1048 states and 1413 transitions. [2023-12-24 23:57:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:57:54,017 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 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 35 [2023-12-24 23:57:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:54,023 INFO L225 Difference]: With dead ends: 1048 [2023-12-24 23:57:54,023 INFO L226 Difference]: Without dead ends: 1023 [2023-12-24 23:57:54,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=151, Invalid=2011, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 23:57:54,024 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:54,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 868 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 23:57:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-24 23:57:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 985. [2023-12-24 23:57:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 1.366869918699187) internal successors, (1345), 984 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states 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 23:57:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1345 transitions. [2023-12-24 23:57:54,781 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1345 transitions. Word has length 35 [2023-12-24 23:57:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:54,781 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1345 transitions. [2023-12-24 23:57:54,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 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 23:57:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1345 transitions. [2023-12-24 23:57:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:57:54,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:54,782 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:54,788 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 (66)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:54,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:57:54,986 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:54,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash 915980382, now seen corresponding path program 53 times [2023-12-24 23:57:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:54,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499626622] [2023-12-24 23:57:54,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:57:54,987 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 23:57:54,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:54,989 INFO L229 MonitoredProcess]: Starting monitored process 67 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 23:57:54,989 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 (67)] Waiting until timeout for monitored process [2023-12-24 23:57:55,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-24 23:57:55,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:55,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 23:57:55,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-24 23:57:55,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-24 23:57:57,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499626622] [2023-12-24 23:57:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499626622] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:57,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-24 23:57:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107399631] [2023-12-24 23:57:57,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:57,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 23:57:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 23:57:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-24 23:57:57,991 INFO L87 Difference]: Start difference. First operand 985 states and 1345 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:58:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:04,502 INFO L93 Difference]: Finished difference Result 1572 states and 2120 transitions. [2023-12-24 23:58:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 23:58:04,504 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 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 23:58:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:04,506 INFO L225 Difference]: With dead ends: 1572 [2023-12-24 23:58:04,506 INFO L226 Difference]: Without dead ends: 1431 [2023-12-24 23:58:04,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=545, Invalid=2107, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 23:58:04,507 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 241 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:04,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 344 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 23:58:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-12-24 23:58:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1162. [2023-12-24 23:58:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.3341946597760552) internal successors, (1549), 1161 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states 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 23:58:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1549 transitions. [2023-12-24 23:58:05,437 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1549 transitions. Word has length 35 [2023-12-24 23:58:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1549 transitions. [2023-12-24 23:58:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:58:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1549 transitions. [2023-12-24 23:58:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:58:05,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:05,438 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:05,442 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 (67)] Ended with exit code 0 [2023-12-24 23:58:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:05,642 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:05,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1695635673, now seen corresponding path program 54 times [2023-12-24 23:58:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140553460] [2023-12-24 23:58:05,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:58:05,643 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 23:58:05,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:05,644 INFO L229 MonitoredProcess]: Starting monitored process 68 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 23:58:05,645 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 (68)] Waiting until timeout for monitored process [2023-12-24 23:58:05,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-24 23:58:05,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:05,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:58:05,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 23:58:05,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-24 23:58:06,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:06,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140553460] [2023-12-24 23:58:06,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140553460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:06,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:06,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2023-12-24 23:58:06,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384115170] [2023-12-24 23:58:06,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:06,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 23:58:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 23:58:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 23:58:06,677 INFO L87 Difference]: Start difference. First operand 1162 states and 1549 transitions. Second operand has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 23:58:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:08,718 INFO L93 Difference]: Finished difference Result 1229 states and 1631 transitions. [2023-12-24 23:58:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 23:58:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 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 23:58:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:08,722 INFO L225 Difference]: With dead ends: 1229 [2023-12-24 23:58:08,723 INFO L226 Difference]: Without dead ends: 1203 [2023-12-24 23:58:08,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=2082, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 23:58:08,739 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 49 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:08,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 825 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:58:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-24 23:58:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1173. [2023-12-24 23:58:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.3370307167235496) internal successors, (1567), 1172 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 23:58:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1567 transitions. [2023-12-24 23:58:09,714 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1567 transitions. Word has length 35 [2023-12-24 23:58:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:09,714 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1567 transitions. [2023-12-24 23:58:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 23:58:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1567 transitions. [2023-12-24 23:58:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:58:09,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:09,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:09,719 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 (68)] Ended with exit code 0 [2023-12-24 23:58:09,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:09,919 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:09,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1914782398, now seen corresponding path program 55 times [2023-12-24 23:58:09,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:09,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475834582] [2023-12-24 23:58:09,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:58:09,920 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 23:58:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:09,921 INFO L229 MonitoredProcess]: Starting monitored process 69 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 23:58:09,957 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 (69)] Waiting until timeout for monitored process [2023-12-24 23:58:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:09,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:58:10,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-24 23:58:10,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-24 23:58:11,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475834582] [2023-12-24 23:58:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475834582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:11,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 23:58:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487476979] [2023-12-24 23:58:11,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:11,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:58:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:58:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:58:11,446 INFO L87 Difference]: Start difference. First operand 1173 states and 1567 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:58:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:13,846 INFO L93 Difference]: Finished difference Result 1215 states and 1609 transitions. [2023-12-24 23:58:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 23:58:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 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 23:58:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:13,848 INFO L225 Difference]: With dead ends: 1215 [2023-12-24 23:58:13,848 INFO L226 Difference]: Without dead ends: 1178 [2023-12-24 23:58:13,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 23:58:13,849 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:13,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 566 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 23:58:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-12-24 23:58:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1173. [2023-12-24 23:58:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.2986348122866893) internal successors, (1522), 1172 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states 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 23:58:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1522 transitions. [2023-12-24 23:58:14,801 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1522 transitions. Word has length 35 [2023-12-24 23:58:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:14,801 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1522 transitions. [2023-12-24 23:58:14,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:58:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1522 transitions. [2023-12-24 23:58:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-24 23:58:14,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:14,803 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:14,809 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 (69)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:15,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:15,009 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:15,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash -860912710, now seen corresponding path program 56 times [2023-12-24 23:58:15,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:15,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618799605] [2023-12-24 23:58:15,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:58:15,010 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 23:58:15,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:15,012 INFO L229 MonitoredProcess]: Starting monitored process 70 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 23:58:15,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2023-12-24 23:58:15,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:58:15,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:15,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 23:58:15,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:58:16,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:58:21,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618799605] [2023-12-24 23:58:21,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618799605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:21,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2023-12-24 23:58:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157289834] [2023-12-24 23:58:21,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 23:58:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 23:58:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 23:58:21,221 INFO L87 Difference]: Start difference. First operand 1173 states and 1522 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 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 23:58:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:27,582 INFO L93 Difference]: Finished difference Result 1275 states and 1638 transitions. [2023-12-24 23:58:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 23:58:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 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 36 [2023-12-24 23:58:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:27,585 INFO L225 Difference]: With dead ends: 1275 [2023-12-24 23:58:27,585 INFO L226 Difference]: Without dead ends: 1253 [2023-12-24 23:58:27,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=620, Invalid=3412, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 23:58:27,586 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 304 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 940 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 23:58:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-12-24 23:58:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1179. [2023-12-24 23:58:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 1.2971137521222411) internal successors, (1528), 1178 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states 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 23:58:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1528 transitions. [2023-12-24 23:58:28,586 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1528 transitions. Word has length 36 [2023-12-24 23:58:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:28,586 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1528 transitions. [2023-12-24 23:58:28,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 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 23:58:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1528 transitions. [2023-12-24 23:58:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-24 23:58:28,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:28,588 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:28,593 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 (70)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:28,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:28,791 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:28,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1653966574, now seen corresponding path program 57 times [2023-12-24 23:58:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:28,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24075472] [2023-12-24 23:58:28,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:58:28,792 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 23:58:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:28,793 INFO L229 MonitoredProcess]: Starting monitored process 71 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 23:58:28,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2023-12-24 23:58:28,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:58:28,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:28,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 23:58:28,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:58:28,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:58:29,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:29,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24075472] [2023-12-24 23:58:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24075472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:29,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 23:58:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855902685] [2023-12-24 23:58:29,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:58:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:58:29,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:58:29,334 INFO L87 Difference]: Start difference. First operand 1179 states and 1528 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 23:58:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:35,927 INFO L93 Difference]: Finished difference Result 2042 states and 2768 transitions. [2023-12-24 23:58:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-24 23:58:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 36 [2023-12-24 23:58:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:35,930 INFO L225 Difference]: With dead ends: 2042 [2023-12-24 23:58:35,930 INFO L226 Difference]: Without dead ends: 1714 [2023-12-24 23:58:35,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2778 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1545, Invalid=7011, Unknown=0, NotChecked=0, Total=8556 [2023-12-24 23:58:35,931 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 374 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:35,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 336 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:58:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2023-12-24 23:58:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1357. [2023-12-24 23:58:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 1.3311209439528024) internal successors, (1805), 1356 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 23:58:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1805 transitions. [2023-12-24 23:58:37,088 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1805 transitions. Word has length 36 [2023-12-24 23:58:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:37,088 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1805 transitions. [2023-12-24 23:58:37,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 23:58:37,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1805 transitions. [2023-12-24 23:58:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-24 23:58:37,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:37,089 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:37,093 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 (71)] Ended with exit code 0 [2023-12-24 23:58:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:37,293 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:37,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1984619611, now seen corresponding path program 58 times [2023-12-24 23:58:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566474912] [2023-12-24 23:58:37,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:58:37,294 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 23:58:37,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:37,295 INFO L229 MonitoredProcess]: Starting monitored process 72 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 23:58:37,295 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 (72)] Waiting until timeout for monitored process [2023-12-24 23:58:37,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:58:37,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:37,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 23:58:37,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:58:37,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:58:37,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:37,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566474912] [2023-12-24 23:58:37,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566474912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:37,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:37,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 23:58:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636185890] [2023-12-24 23:58:37,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 23:58:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 23:58:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2023-12-24 23:58:37,763 INFO L87 Difference]: Start difference. First operand 1357 states and 1805 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 23:58:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:49,566 INFO L93 Difference]: Finished difference Result 1863 states and 2446 transitions. [2023-12-24 23:58:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-24 23:58:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 36 [2023-12-24 23:58:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:49,569 INFO L225 Difference]: With dead ends: 1863 [2023-12-24 23:58:49,569 INFO L226 Difference]: Without dead ends: 1858 [2023-12-24 23:58:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=991, Invalid=3701, Unknown=0, NotChecked=0, Total=4692 [2023-12-24 23:58:49,569 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 299 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:49,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 406 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:58:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-12-24 23:58:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1429. [2023-12-24 23:58:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 1.3676470588235294) internal successors, (1953), 1428 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states 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 23:58:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1953 transitions. [2023-12-24 23:58:50,781 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1953 transitions. Word has length 36 [2023-12-24 23:58:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:50,781 INFO L495 AbstractCegarLoop]: Abstraction has 1429 states and 1953 transitions. [2023-12-24 23:58:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 23:58:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1953 transitions. [2023-12-24 23:58:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:58:50,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:50,783 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:50,790 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 (72)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:50,987 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:50,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1473765492, now seen corresponding path program 59 times [2023-12-24 23:58:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:50,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881192846] [2023-12-24 23:58:50,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:58:50,988 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 23:58:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:50,989 INFO L229 MonitoredProcess]: Starting monitored process 73 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 23:58:50,989 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 (73)] Waiting until timeout for monitored process [2023-12-24 23:58:51,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-24 23:58:51,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:51,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 23:58:51,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:58:51,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:58:52,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881192846] [2023-12-24 23:58:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881192846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:52,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 43 [2023-12-24 23:58:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492279061] [2023-12-24 23:58:52,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:52,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-24 23:58:52,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-24 23:58:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1705, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 23:58:52,142 INFO L87 Difference]: Start difference. First operand 1429 states and 1953 transitions. Second operand has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 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 23:58:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:54,956 INFO L93 Difference]: Finished difference Result 1579 states and 2146 transitions. [2023-12-24 23:58:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 23:58:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 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 37 [2023-12-24 23:58:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:54,959 INFO L225 Difference]: With dead ends: 1579 [2023-12-24 23:58:54,959 INFO L226 Difference]: Without dead ends: 1571 [2023-12-24 23:58:54,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 23:58:54,959 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 99 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1487 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 23:58:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2023-12-24 23:58:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1472. [2023-12-24 23:58:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 1.3698164513936097) internal successors, (2015), 1471 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states 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 23:58:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2015 transitions. [2023-12-24 23:58:56,243 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2015 transitions. Word has length 37 [2023-12-24 23:58:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:56,244 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2015 transitions. [2023-12-24 23:58:56,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 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 23:58:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2015 transitions. [2023-12-24 23:58:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:58:56,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:56,245 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:56,249 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 (73)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:58:56,449 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -852229904, now seen corresponding path program 60 times [2023-12-24 23:58:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983004086] [2023-12-24 23:58:56,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:58:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:58:56,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:56,450 INFO L229 MonitoredProcess]: Starting monitored process 74 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 23:58:56,477 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 (74)] Waiting until timeout for monitored process [2023-12-24 23:58:56,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-24 23:58:56,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:56,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 23:58:56,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:58:56,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 23:58:57,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:57,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983004086] [2023-12-24 23:58:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983004086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:57,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2023-12-24 23:58:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584844406] [2023-12-24 23:58:57,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-24 23:58:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-24 23:58:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2226, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 23:58:57,917 INFO L87 Difference]: Start difference. First operand 1472 states and 2015 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 23:59:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:00,682 INFO L93 Difference]: Finished difference Result 1529 states and 2084 transitions. [2023-12-24 23:59:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 23:59:00,682 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 23:59:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:00,684 INFO L225 Difference]: With dead ends: 1529 [2023-12-24 23:59:00,684 INFO L226 Difference]: Without dead ends: 1504 [2023-12-24 23:59:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=201, Invalid=3581, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 23:59:00,685 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1479 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 23:59:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-12-24 23:59:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1472. [2023-12-24 23:59:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 1.3752549286199864) internal successors, (2023), 1471 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states 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 23:59:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2023 transitions. [2023-12-24 23:59:01,906 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2023 transitions. Word has length 37 [2023-12-24 23:59:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2023 transitions. [2023-12-24 23:59:01,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 23:59:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2023 transitions. [2023-12-24 23:59:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:59:01,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:01,908 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:01,911 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 (74)] Ended with exit code 0 [2023-12-24 23:59:02,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:02,112 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:02,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 885730188, now seen corresponding path program 61 times [2023-12-24 23:59:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:02,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407077212] [2023-12-24 23:59:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:59:02,112 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 23:59:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:02,113 INFO L229 MonitoredProcess]: Starting monitored process 75 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 23:59:02,115 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 (75)] Waiting until timeout for monitored process [2023-12-24 23:59:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:59:02,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 23:59:02,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:59:02,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:59:03,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:03,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407077212] [2023-12-24 23:59:03,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407077212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:03,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 39 [2023-12-24 23:59:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818053685] [2023-12-24 23:59:03,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:03,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 23:59:03,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 23:59:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 23:59:03,352 INFO L87 Difference]: Start difference. First operand 1472 states and 2023 transitions. Second operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 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 23:59:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:05,967 INFO L93 Difference]: Finished difference Result 1536 states and 2100 transitions. [2023-12-24 23:59:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 23:59:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-24 23:59:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:05,969 INFO L225 Difference]: With dead ends: 1536 [2023-12-24 23:59:05,969 INFO L226 Difference]: Without dead ends: 1510 [2023-12-24 23:59:05,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=162, Invalid=2388, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 23:59:05,970 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:05,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1164 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:59:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-12-24 23:59:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1478. [2023-12-24 23:59:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 1.3791469194312795) internal successors, (2037), 1477 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states 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 23:59:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2037 transitions. [2023-12-24 23:59:07,199 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2037 transitions. Word has length 37 [2023-12-24 23:59:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:07,199 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2037 transitions. [2023-12-24 23:59:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 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 23:59:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2037 transitions. [2023-12-24 23:59:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:59:07,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:07,200 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:07,206 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 (75)] Forceful destruction successful, exit code 0 [2023-12-24 23:59:07,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:07,404 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:07,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1826129136, now seen corresponding path program 62 times [2023-12-24 23:59:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002250422] [2023-12-24 23:59:07,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:59:07,405 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 23:59:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:07,406 INFO L229 MonitoredProcess]: Starting monitored process 76 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 23:59:07,407 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 (76)] Waiting until timeout for monitored process [2023-12-24 23:59:07,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:59:07,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:07,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:59:07,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-24 23:59:07,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-24 23:59:08,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:08,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002250422] [2023-12-24 23:59:08,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002250422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:08,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:08,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 43 [2023-12-24 23:59:08,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392093481] [2023-12-24 23:59:08,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:08,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-24 23:59:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-24 23:59:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 23:59:08,771 INFO L87 Difference]: Start difference. First operand 1478 states and 2037 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 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 23:59:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:11,390 INFO L93 Difference]: Finished difference Result 1540 states and 2113 transitions. [2023-12-24 23:59:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 23:59:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 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 37 [2023-12-24 23:59:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:11,393 INFO L225 Difference]: With dead ends: 1540 [2023-12-24 23:59:11,393 INFO L226 Difference]: Without dead ends: 1513 [2023-12-24 23:59:11,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=207, Invalid=2873, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 23:59:11,393 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:11,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 904 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 23:59:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-12-24 23:59:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1482. [2023-12-24 23:59:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 1.3835246455097907) internal successors, (2049), 1481 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states 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 23:59:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2049 transitions. [2023-12-24 23:59:12,644 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2049 transitions. Word has length 37 [2023-12-24 23:59:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:12,644 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2049 transitions. [2023-12-24 23:59:12,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 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 23:59:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2049 transitions. [2023-12-24 23:59:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:59:12,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:12,645 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:12,651 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 (76)] Forceful destruction successful, exit code 0 [2023-12-24 23:59:12,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:12,852 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:12,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1422858124, now seen corresponding path program 63 times [2023-12-24 23:59:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:12,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105860347] [2023-12-24 23:59:12,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:59:12,853 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 23:59:12,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:12,854 INFO L229 MonitoredProcess]: Starting monitored process 77 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 23:59:12,855 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 (77)] Waiting until timeout for monitored process [2023-12-24 23:59:12,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:59:12,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:12,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 23:59:12,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-24 23:59:13,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-24 23:59:13,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:13,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105860347] [2023-12-24 23:59:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105860347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:13,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:13,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2023-12-24 23:59:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110698291] [2023-12-24 23:59:13,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:13,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 23:59:13,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 23:59:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 23:59:13,909 INFO L87 Difference]: Start difference. First operand 1482 states and 2049 transitions. Second operand has 35 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:59:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:16,165 INFO L93 Difference]: Finished difference Result 1540 states and 2123 transitions. [2023-12-24 23:59:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:59:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-24 23:59:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:16,194 INFO L225 Difference]: With dead ends: 1540 [2023-12-24 23:59:16,194 INFO L226 Difference]: Without dead ends: 1535 [2023-12-24 23:59:16,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 23:59:16,194 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:16,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 586 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:59:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2023-12-24 23:59:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1517. [2023-12-24 23:59:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 1.3819261213720317) internal successors, (2095), 1516 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states 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 23:59:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2095 transitions. [2023-12-24 23:59:17,526 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2095 transitions. Word has length 37 [2023-12-24 23:59:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2095 transitions. [2023-12-24 23:59:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:59:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2095 transitions. [2023-12-24 23:59:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-24 23:59:17,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:17,528 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:17,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2023-12-24 23:59:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:17,732 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:17,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1135146718, now seen corresponding path program 2 times [2023-12-24 23:59:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:17,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618592139] [2023-12-24 23:59:17,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:59:17,733 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 23:59:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:17,734 INFO L229 MonitoredProcess]: Starting monitored process 78 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 23:59:17,751 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 (78)] Waiting until timeout for monitored process [2023-12-24 23:59:17,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:59:17,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:17,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 23:59:17,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:59:17,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 23:59:18,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618592139] [2023-12-24 23:59:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618592139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:18,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-24 23:59:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307463262] [2023-12-24 23:59:18,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:18,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 23:59:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 23:59:18,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2023-12-24 23:59:18,119 INFO L87 Difference]: Start difference. First operand 1517 states and 2095 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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 23:59:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:21,959 INFO L93 Difference]: Finished difference Result 3224 states and 4589 transitions. [2023-12-24 23:59:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-24 23:59:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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 37 [2023-12-24 23:59:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:21,981 INFO L225 Difference]: With dead ends: 3224 [2023-12-24 23:59:21,981 INFO L226 Difference]: Without dead ends: 2851 [2023-12-24 23:59:21,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1003, Invalid=2189, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 23:59:21,983 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 850 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:21,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 685 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 23:59:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2023-12-24 23:59:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1553. [2023-12-24 23:59:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1552 states have (on average 1.365979381443299) internal successors, (2120), 1552 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 23:59:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2120 transitions. [2023-12-24 23:59:23,437 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2120 transitions. Word has length 37 [2023-12-24 23:59:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2120 transitions. [2023-12-24 23:59:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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 23:59:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2120 transitions. [2023-12-24 23:59:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 23:59:23,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:23,439 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:23,442 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 (78)] Ended with exit code 0 [2023-12-24 23:59:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:23,643 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1002634746, now seen corresponding path program 64 times [2023-12-24 23:59:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880607557] [2023-12-24 23:59:23,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:59:23,644 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 23:59:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:23,645 INFO L229 MonitoredProcess]: Starting monitored process 79 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 23:59:23,658 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 (79)] Waiting until timeout for monitored process [2023-12-24 23:59:23,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:59:23,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:23,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 23:59:23,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:59:25,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:59:32,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:32,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880607557] [2023-12-24 23:59:32,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880607557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:32,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:32,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2023-12-24 23:59:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16534241] [2023-12-24 23:59:32,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:32,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 23:59:32,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 23:59:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1685, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 23:59:32,302 INFO L87 Difference]: Start difference. First operand 1553 states and 2120 transitions. Second operand has 44 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 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 23:59:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:43,934 INFO L93 Difference]: Finished difference Result 2156 states and 2792 transitions. [2023-12-24 23:59:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-24 23:59:43,936 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 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 38 [2023-12-24 23:59:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:43,938 INFO L225 Difference]: With dead ends: 2156 [2023-12-24 23:59:43,938 INFO L226 Difference]: Without dead ends: 2053 [2023-12-24 23:59:43,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=929, Invalid=5713, Unknown=0, NotChecked=0, Total=6642 [2023-12-24 23:59:43,939 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 577 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:43,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1751 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 23:59:43,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-12-24 23:59:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1583. [2023-12-24 23:59:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.3710493046776233) internal successors, (2169), 1582 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states 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 23:59:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2169 transitions. [2023-12-24 23:59:45,361 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2169 transitions. Word has length 38 [2023-12-24 23:59:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:45,361 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2169 transitions. [2023-12-24 23:59:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 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 23:59:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2169 transitions. [2023-12-24 23:59:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 23:59:45,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:45,363 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:59:45,367 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 (79)] Forceful destruction successful, exit code 0 [2023-12-24 23:59:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 23:59:45,567 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:45,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash 351860781, now seen corresponding path program 65 times [2023-12-24 23:59:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614387288] [2023-12-24 23:59:45,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:59:45,568 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 23:59:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:45,569 INFO L229 MonitoredProcess]: Starting monitored process 80 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 23:59:45,584 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 (80)] Waiting until timeout for monitored process [2023-12-24 23:59:45,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-24 23:59:45,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:45,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-24 23:59:45,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-24 23:59:47,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:00:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:00:01,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614387288] [2023-12-25 00:00:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614387288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:00:01,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:00:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-12-25 00:00:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883445036] [2023-12-25 00:00:01,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:00:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 00:00:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:01,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 00:00:01,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1763, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 00:00:01,500 INFO L87 Difference]: Start difference. First operand 1583 states and 2169 transitions. Second operand has 46 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 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) [2023-12-25 00:00:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:58,956 INFO L93 Difference]: Finished difference Result 2298 states and 3023 transitions. [2023-12-25 00:00:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-25 00:00:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 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 38 [2023-12-25 00:00:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:58,959 INFO L225 Difference]: With dead ends: 2298 [2023-12-25 00:00:58,960 INFO L226 Difference]: Without dead ends: 2275 [2023-12-25 00:00:58,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 60.6s TimeCoverageRelationStatistics Valid=3042, Invalid=14780, Unknown=0, NotChecked=0, Total=17822 [2023-12-25 00:00:58,961 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 400 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:58,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1232 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-25 00:00:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2023-12-25 00:01:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1782. [2023-12-25 00:01:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1781 states have (on average 1.3531723750701854) internal successors, (2410), 1781 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2410 transitions. [2023-12-25 00:01:01,392 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2410 transitions. Word has length 38 [2023-12-25 00:01:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:01,392 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2410 transitions. [2023-12-25 00:01:01,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 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) [2023-12-25 00:01:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2410 transitions. [2023-12-25 00:01:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-25 00:01:01,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:01,395 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:01,402 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 (80)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:01,600 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:01,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1188121211, now seen corresponding path program 66 times [2023-12-25 00:01:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:01,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371244804] [2023-12-25 00:01:01,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:01:01,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:01,602 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:01,603 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 (81)] Waiting until timeout for monitored process [2023-12-25 00:01:01,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-25 00:01:01,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:01,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 00:01:01,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:01:01,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:01:02,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371244804] [2023-12-25 00:01:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371244804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:02,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:02,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-25 00:01:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699567938] [2023-12-25 00:01:02,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 00:01:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 00:01:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-25 00:01:02,328 INFO L87 Difference]: Start difference. First operand 1782 states and 2410 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:06,088 INFO L93 Difference]: Finished difference Result 1850 states and 2481 transitions. [2023-12-25 00:01:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-25 00:01:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2023-12-25 00:01:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:06,090 INFO L225 Difference]: With dead ends: 1850 [2023-12-25 00:01:06,090 INFO L226 Difference]: Without dead ends: 1835 [2023-12-25 00:01:06,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 00:01:06,091 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 120 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:06,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 363 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 00:01:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2023-12-25 00:01:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1809. [2023-12-25 00:01:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3484513274336283) internal successors, (2438), 1808 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2438 transitions. [2023-12-25 00:01:07,985 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2438 transitions. Word has length 38 [2023-12-25 00:01:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 2438 transitions. [2023-12-25 00:01:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2438 transitions. [2023-12-25 00:01:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:07,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:07,988 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:07,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:08,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:08,192 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:08,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1762474361, now seen corresponding path program 67 times [2023-12-25 00:01:08,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:08,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060485921] [2023-12-25 00:01:08,193 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:01:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:08,194 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:08,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2023-12-25 00:01:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:01:08,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 00:01:08,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 00:01:08,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 00:01:09,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060485921] [2023-12-25 00:01:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060485921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:09,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 46 [2023-12-25 00:01:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334449511] [2023-12-25 00:01:09,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 00:01:09,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 00:01:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1962, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 00:01:09,535 INFO L87 Difference]: Start difference. First operand 1809 states and 2438 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 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) [2023-12-25 00:01:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:13,544 INFO L93 Difference]: Finished difference Result 1888 states and 2531 transitions. [2023-12-25 00:01:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 00:01:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 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 39 [2023-12-25 00:01:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:13,547 INFO L225 Difference]: With dead ends: 1888 [2023-12-25 00:01:13,547 INFO L226 Difference]: Without dead ends: 1880 [2023-12-25 00:01:13,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 00:01:13,547 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 112 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:13,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1575 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 00:01:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-25 00:01:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1834. [2023-12-25 00:01:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.34860883797054) internal successors, (2472), 1833 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2472 transitions. [2023-12-25 00:01:16,148 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2472 transitions. Word has length 39 [2023-12-25 00:01:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:16,148 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2472 transitions. [2023-12-25 00:01:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 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) [2023-12-25 00:01:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2472 transitions. [2023-12-25 00:01:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:16,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:16,151 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:16,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:16,356 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:16,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -859199623, now seen corresponding path program 68 times [2023-12-25 00:01:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630084684] [2023-12-25 00:01:16,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:01:16,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:16,359 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:16,391 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 (83)] Waiting until timeout for monitored process [2023-12-25 00:01:16,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:01:16,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:16,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 00:01:16,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:01:17,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:01:18,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630084684] [2023-12-25 00:01:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630084684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:18,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:18,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-12-25 00:01:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741033805] [2023-12-25 00:01:18,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-25 00:01:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-25 00:01:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2620, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 00:01:18,376 INFO L87 Difference]: Start difference. First operand 1834 states and 2472 transitions. Second operand has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 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) [2023-12-25 00:01:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:23,267 INFO L93 Difference]: Finished difference Result 1935 states and 2585 transitions. [2023-12-25 00:01:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 00:01:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 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 39 [2023-12-25 00:01:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:23,270 INFO L225 Difference]: With dead ends: 1935 [2023-12-25 00:01:23,270 INFO L226 Difference]: Without dead ends: 1909 [2023-12-25 00:01:23,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=216, Invalid=4206, Unknown=0, NotChecked=0, Total=4422 [2023-12-25 00:01:23,271 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 114 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:23,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1641 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 00:01:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-12-25 00:01:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1842. [2023-12-25 00:01:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3514394350896253) internal successors, (2488), 1841 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2488 transitions. [2023-12-25 00:01:25,241 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2488 transitions. Word has length 39 [2023-12-25 00:01:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:25,241 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2488 transitions. [2023-12-25 00:01:25,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 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) [2023-12-25 00:01:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2488 transitions. [2023-12-25 00:01:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:25,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:25,244 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:25,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:25,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:25,447 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:25,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1719435641, now seen corresponding path program 69 times [2023-12-25 00:01:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075244325] [2023-12-25 00:01:25,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:01:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:25,449 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:25,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2023-12-25 00:01:25,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:01:25,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:25,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-25 00:01:25,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:01:25,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:01:26,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075244325] [2023-12-25 00:01:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075244325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:26,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 42 [2023-12-25 00:01:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614626905] [2023-12-25 00:01:26,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 00:01:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 00:01:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1616, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 00:01:26,874 INFO L87 Difference]: Start difference. First operand 1842 states and 2488 transitions. Second operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 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) [2023-12-25 00:01:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:31,621 INFO L93 Difference]: Finished difference Result 1948 states and 2607 transitions. [2023-12-25 00:01:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 00:01:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 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 39 [2023-12-25 00:01:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:31,624 INFO L225 Difference]: With dead ends: 1948 [2023-12-25 00:01:31,624 INFO L226 Difference]: Without dead ends: 1921 [2023-12-25 00:01:31,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=173, Invalid=2797, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 00:01:31,624 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 81 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:31,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1362 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 00:01:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2023-12-25 00:01:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1848. [2023-12-25 00:01:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 1.3546291283161884) internal successors, (2502), 1847 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2502 transitions. [2023-12-25 00:01:34,142 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2502 transitions. Word has length 39 [2023-12-25 00:01:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:34,142 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 2502 transitions. [2023-12-25 00:01:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 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) [2023-12-25 00:01:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2502 transitions. [2023-12-25 00:01:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:34,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:34,145 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:34,152 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 (84)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:34,350 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:34,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -151888007, now seen corresponding path program 70 times [2023-12-25 00:01:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341981655] [2023-12-25 00:01:34,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:01:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:34,352 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:34,354 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 (85)] Waiting until timeout for monitored process [2023-12-25 00:01:34,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:01:34,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:34,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 00:01:34,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 00:01:34,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 00:01:36,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:36,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341981655] [2023-12-25 00:01:36,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341981655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:36,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:36,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2023-12-25 00:01:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557849089] [2023-12-25 00:01:36,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:36,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 00:01:36,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 00:01:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 00:01:36,434 INFO L87 Difference]: Start difference. First operand 1848 states and 2502 transitions. Second operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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) [2023-12-25 00:01:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:41,085 INFO L93 Difference]: Finished difference Result 1953 states and 2621 transitions. [2023-12-25 00:01:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-25 00:01:41,086 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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 39 [2023-12-25 00:01:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:41,088 INFO L225 Difference]: With dead ends: 1953 [2023-12-25 00:01:41,088 INFO L226 Difference]: Without dead ends: 1925 [2023-12-25 00:01:41,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=200, Invalid=2992, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 00:01:41,089 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:41,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1214 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 00:01:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2023-12-25 00:01:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1852. [2023-12-25 00:01:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 1.3581847649918963) internal successors, (2514), 1851 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2514 transitions. [2023-12-25 00:01:43,610 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2514 transitions. Word has length 39 [2023-12-25 00:01:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:43,610 INFO L495 AbstractCegarLoop]: Abstraction has 1852 states and 2514 transitions. [2023-12-25 00:01:43,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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) [2023-12-25 00:01:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2514 transitions. [2023-12-25 00:01:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:43,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:43,612 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:43,622 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 (85)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:43,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:43,817 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:43,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1350604866, now seen corresponding path program 71 times [2023-12-25 00:01:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444871624] [2023-12-25 00:01:43,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:01:43,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:43,818 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:43,820 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 (86)] Waiting until timeout for monitored process [2023-12-25 00:01:43,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 00:01:43,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:43,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 00:01:43,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-25 00:01:45,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-25 00:01:47,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444871624] [2023-12-25 00:01:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444871624] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:47,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-25 00:01:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530267513] [2023-12-25 00:01:47,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:47,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 00:01:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 00:01:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-25 00:01:47,412 INFO L87 Difference]: Start difference. First operand 1852 states and 2514 transitions. Second operand has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:01:54,561 INFO L93 Difference]: Finished difference Result 2226 states and 3003 transitions. [2023-12-25 00:01:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 00:01:54,562 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 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 39 [2023-12-25 00:01:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:01:54,564 INFO L225 Difference]: With dead ends: 2226 [2023-12-25 00:01:54,564 INFO L226 Difference]: Without dead ends: 2046 [2023-12-25 00:01:54,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 00:01:54,565 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 315 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:01:54,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 533 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 00:01:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2023-12-25 00:01:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1980. [2023-12-25 00:01:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 1.3400707427993936) internal successors, (2652), 1979 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2652 transitions. [2023-12-25 00:01:56,673 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2652 transitions. Word has length 39 [2023-12-25 00:01:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:01:56,673 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 2652 transitions. [2023-12-25 00:01:56,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:01:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2652 transitions. [2023-12-25 00:01:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:01:56,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:01:56,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:01:56,681 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 (86)] Forceful destruction successful, exit code 0 [2023-12-25 00:01:56,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:56,880 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:01:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:01:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1780758151, now seen corresponding path program 72 times [2023-12-25 00:01:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:01:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339060966] [2023-12-25 00:01:56,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:01:56,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:01:56,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:01:56,881 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:01:56,882 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 (87)] Waiting until timeout for monitored process [2023-12-25 00:01:56,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-25 00:01:56,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:01:56,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 00:01:56,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:01:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 00:01:57,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 00:01:58,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339060966] [2023-12-25 00:01:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339060966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:58,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2023-12-25 00:01:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391328212] [2023-12-25 00:01:58,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 00:01:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 00:01:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 00:01:58,287 INFO L87 Difference]: Start difference. First operand 1980 states and 2652 transitions. Second operand has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 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) [2023-12-25 00:02:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:02:02,230 INFO L93 Difference]: Finished difference Result 2054 states and 2742 transitions. [2023-12-25 00:02:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 00:02:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 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 39 [2023-12-25 00:02:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:02:02,235 INFO L225 Difference]: With dead ends: 2054 [2023-12-25 00:02:02,235 INFO L226 Difference]: Without dead ends: 2032 [2023-12-25 00:02:02,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=2183, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 00:02:02,239 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:02:02,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 744 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 00:02:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2023-12-25 00:02:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1998. [2023-12-25 00:02:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1997 states have (on average 1.3410115172759138) internal successors, (2678), 1997 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:02:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2678 transitions. [2023-12-25 00:02:05,060 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2678 transitions. Word has length 39 [2023-12-25 00:02:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:02:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 2678 transitions. [2023-12-25 00:02:05,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 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) [2023-12-25 00:02:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2678 transitions. [2023-12-25 00:02:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:02:05,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:02:05,064 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:02:05,074 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 (87)] Forceful destruction successful, exit code 0 [2023-12-25 00:02:05,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:05,272 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:02:05,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:02:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1816211810, now seen corresponding path program 73 times [2023-12-25 00:02:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:02:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026109237] [2023-12-25 00:02:05,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:02:05,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:02:05,274 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:02:05,286 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 (88)] Waiting until timeout for monitored process [2023-12-25 00:02:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:02:05,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 00:02:05,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:02:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:02:05,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:02:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:02:05,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:02:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026109237] [2023-12-25 00:02:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026109237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:02:05,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:02:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-25 00:02:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89151412] [2023-12-25 00:02:05,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:02:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 00:02:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:02:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 00:02:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-12-25 00:02:05,906 INFO L87 Difference]: Start difference. First operand 1998 states and 2678 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:02:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:02:19,435 INFO L93 Difference]: Finished difference Result 3887 states and 5454 transitions. [2023-12-25 00:02:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-25 00:02:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 39 [2023-12-25 00:02:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:02:19,439 INFO L225 Difference]: With dead ends: 3887 [2023-12-25 00:02:19,439 INFO L226 Difference]: Without dead ends: 3319 [2023-12-25 00:02:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2922 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2642, Invalid=7258, Unknown=0, NotChecked=0, Total=9900 [2023-12-25 00:02:19,440 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 949 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:02:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 709 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 00:02:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2023-12-25 00:02:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 1994. [2023-12-25 00:02:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 1.325137982940291) internal successors, (2641), 1993 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:02:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2641 transitions. [2023-12-25 00:02:21,611 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2641 transitions. Word has length 39 [2023-12-25 00:02:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:02:21,611 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2641 transitions. [2023-12-25 00:02:21,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:02:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2641 transitions. [2023-12-25 00:02:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 00:02:21,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:02:21,613 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:02:21,616 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 (88)] Forceful destruction successful, exit code 0 [2023-12-25 00:02:21,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:21,817 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:02:21,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:02:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -452301350, now seen corresponding path program 74 times [2023-12-25 00:02:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:02:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420174567] [2023-12-25 00:02:21,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:02:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:21,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:02:21,819 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:02:21,820 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 (89)] Waiting until timeout for monitored process [2023-12-25 00:02:21,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:02:21,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:02:21,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 00:02:21,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:02:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:02:24,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:02:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 47 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:02:37,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:02:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420174567] [2023-12-25 00:02:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420174567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:02:37,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:02:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-25 00:02:37,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782360915] [2023-12-25 00:02:37,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:02:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-25 00:02:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:02:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-25 00:02:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 00:02:37,626 INFO L87 Difference]: Start difference. First operand 1994 states and 2641 transitions. Second operand has 48 states, 48 states have (on average 1.5) internal successors, (72), 48 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) [2023-12-25 00:02:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:02:55,558 INFO L93 Difference]: Finished difference Result 2195 states and 2863 transitions. [2023-12-25 00:02:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-25 00:02:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5) internal successors, (72), 48 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) Word has length 40 [2023-12-25 00:02:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:02:55,566 INFO L225 Difference]: With dead ends: 2195 [2023-12-25 00:02:55,566 INFO L226 Difference]: Without dead ends: 2170 [2023-12-25 00:02:55,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=961, Invalid=5845, Unknown=0, NotChecked=0, Total=6806 [2023-12-25 00:02:55,567 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 384 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:02:55,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1314 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 00:02:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2023-12-25 00:02:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2001. [2023-12-25 00:02:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.324) internal successors, (2648), 2000 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:02:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2648 transitions. [2023-12-25 00:02:58,389 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2648 transitions. Word has length 40 [2023-12-25 00:02:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:02:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2648 transitions. [2023-12-25 00:02:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5) internal successors, (72), 48 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) [2023-12-25 00:02:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2648 transitions. [2023-12-25 00:02:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 00:02:58,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:02:58,392 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:02:58,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2023-12-25 00:02:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:58,597 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:02:58,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:02:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1805018702, now seen corresponding path program 75 times [2023-12-25 00:02:58,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:02:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293675015] [2023-12-25 00:02:58,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:02:58,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:02:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:02:58,599 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:02:58,600 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 (90)] Waiting until timeout for monitored process [2023-12-25 00:02:58,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:02:58,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:02:58,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 00:02:58,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:02:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:02:58,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:02:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:02:59,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:02:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293675015] [2023-12-25 00:02:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293675015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:02:59,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:02:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-25 00:02:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054866549] [2023-12-25 00:02:59,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:02:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 00:02:59,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:02:59,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 00:02:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-12-25 00:02:59,370 INFO L87 Difference]: Start difference. First operand 2001 states and 2648 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) [2023-12-25 00:03:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:03:08,039 INFO L93 Difference]: Finished difference Result 3112 states and 4176 transitions. [2023-12-25 00:03:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-25 00:03:08,039 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 40 [2023-12-25 00:03:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:03:08,043 INFO L225 Difference]: With dead ends: 3112 [2023-12-25 00:03:08,043 INFO L226 Difference]: Without dead ends: 2734 [2023-12-25 00:03:08,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1465, Invalid=9877, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 00:03:08,045 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 508 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:03:08,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 444 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 00:03:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2023-12-25 00:03:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2155. [2023-12-25 00:03:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2154 states have (on average 1.3203342618384402) internal successors, (2844), 2154 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:03:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2844 transitions. [2023-12-25 00:03:11,293 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2844 transitions. Word has length 40 [2023-12-25 00:03:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:03:11,293 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 2844 transitions. [2023-12-25 00:03:11,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) [2023-12-25 00:03:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2844 transitions. [2023-12-25 00:03:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 00:03:11,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:03:11,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:03:11,302 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 (90)] Forceful destruction successful, exit code 0 [2023-12-25 00:03:11,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:11,499 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:03:11,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:03:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash -79321705, now seen corresponding path program 76 times [2023-12-25 00:03:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:03:11,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717049807] [2023-12-25 00:03:11,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:03:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:03:11,501 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:03:11,503 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 (91)] Waiting until timeout for monitored process [2023-12-25 00:03:11,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:03:11,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:03:11,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 00:03:11,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:03:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:03:11,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:03:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:03:12,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:03:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717049807] [2023-12-25 00:03:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717049807] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:03:12,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:03:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-25 00:03:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136083850] [2023-12-25 00:03:12,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:03:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 00:03:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:03:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 00:03:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2023-12-25 00:03:12,097 INFO L87 Difference]: Start difference. First operand 2155 states and 2844 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) [2023-12-25 00:03:43,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:03:43,980 INFO L93 Difference]: Finished difference Result 2846 states and 3714 transitions. [2023-12-25 00:03:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-25 00:03:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 40 [2023-12-25 00:03:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:03:43,984 INFO L225 Difference]: With dead ends: 2846 [2023-12-25 00:03:43,984 INFO L226 Difference]: Without dead ends: 2841 [2023-12-25 00:03:43,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2470 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=1634, Invalid=6556, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 00:03:43,985 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 453 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 00:03:43,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 501 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 00:03:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2023-12-25 00:03:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2255. [2023-12-25 00:03:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2254 states have (on average 1.35226264418811) internal successors, (3048), 2254 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:03:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3048 transitions. [2023-12-25 00:03:46,678 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3048 transitions. Word has length 40 [2023-12-25 00:03:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:03:46,678 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3048 transitions. [2023-12-25 00:03:46,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) [2023-12-25 00:03:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3048 transitions. [2023-12-25 00:03:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:03:46,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:03:46,680 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:03:46,687 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 (91)] Forceful destruction successful, exit code 0 [2023-12-25 00:03:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:46,885 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:03:46,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:03:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1691715220, now seen corresponding path program 77 times [2023-12-25 00:03:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:03:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220242129] [2023-12-25 00:03:46,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:03:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:03:46,887 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:03:46,889 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 (92)] Waiting until timeout for monitored process [2023-12-25 00:03:46,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-25 00:03:46,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:03:46,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 00:03:46,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:03:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 00:03:47,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:03:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 00:03:48,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:03:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220242129] [2023-12-25 00:03:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220242129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:03:48,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:03:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 49 [2023-12-25 00:03:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612592806] [2023-12-25 00:03:48,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:03:48,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-25 00:03:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:03:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-25 00:03:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2237, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 00:03:48,454 INFO L87 Difference]: Start difference. First operand 2255 states and 3048 transitions. Second operand has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 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) [2023-12-25 00:03:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:03:54,243 INFO L93 Difference]: Finished difference Result 2459 states and 3300 transitions. [2023-12-25 00:03:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 00:03:54,243 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 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 41 [2023-12-25 00:03:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:03:54,247 INFO L225 Difference]: With dead ends: 2459 [2023-12-25 00:03:54,247 INFO L226 Difference]: Without dead ends: 2451 [2023-12-25 00:03:54,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 00:03:54,249 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 121 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:03:54,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1772 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 00:03:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-12-25 00:03:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2294. [2023-12-25 00:03:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 1.352812908853031) internal successors, (3102), 2293 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:03:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3102 transitions. [2023-12-25 00:03:57,972 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3102 transitions. Word has length 41 [2023-12-25 00:03:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:03:57,973 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3102 transitions. [2023-12-25 00:03:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 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) [2023-12-25 00:03:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3102 transitions. [2023-12-25 00:03:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:03:57,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:03:57,975 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:03:57,981 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 (92)] Ended with exit code 0 [2023-12-25 00:03:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:58,181 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:03:58,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:03:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 484799952, now seen corresponding path program 78 times [2023-12-25 00:03:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:03:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641738810] [2023-12-25 00:03:58,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:03:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:03:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:03:58,183 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:03:58,184 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 (93)] Waiting until timeout for monitored process [2023-12-25 00:03:58,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-25 00:03:58,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:03:58,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 00:03:58,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:03:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:03:58,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:04:00,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641738810] [2023-12-25 00:04:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641738810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:00,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:00,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 57 [2023-12-25 00:04:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538762602] [2023-12-25 00:04:00,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:00,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-25 00:04:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-25 00:04:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3046, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 00:04:00,761 INFO L87 Difference]: Start difference. First operand 2294 states and 3102 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:04:06,984 INFO L93 Difference]: Finished difference Result 2379 states and 3201 transitions. [2023-12-25 00:04:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 00:04:06,985 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 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 41 [2023-12-25 00:04:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:04:06,987 INFO L225 Difference]: With dead ends: 2379 [2023-12-25 00:04:06,987 INFO L226 Difference]: Without dead ends: 2352 [2023-12-25 00:04:06,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=231, Invalid=4881, Unknown=0, NotChecked=0, Total=5112 [2023-12-25 00:04:06,988 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 104 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:04:06,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 2118 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 00:04:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2023-12-25 00:04:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2294. [2023-12-25 00:04:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 1.357174007849978) internal successors, (3112), 2293 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3112 transitions. [2023-12-25 00:04:11,129 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3112 transitions. Word has length 41 [2023-12-25 00:04:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:04:11,129 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3112 transitions. [2023-12-25 00:04:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3112 transitions. [2023-12-25 00:04:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:04:11,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:04:11,135 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:04:11,142 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 (93)] Forceful destruction successful, exit code 0 [2023-12-25 00:04:11,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:11,340 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:04:11,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:04:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1144646292, now seen corresponding path program 79 times [2023-12-25 00:04:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:04:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851298115] [2023-12-25 00:04:11,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:04:11,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:11,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:04:11,342 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:04:11,368 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 (94)] Waiting until timeout for monitored process [2023-12-25 00:04:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:04:11,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 00:04:11,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:04:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:04:12,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:04:13,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851298115] [2023-12-25 00:04:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851298115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:13,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:13,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2023-12-25 00:04:13,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976360022] [2023-12-25 00:04:13,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:13,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 00:04:13,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 00:04:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1867, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 00:04:13,462 INFO L87 Difference]: Start difference. First operand 2294 states and 3112 transitions. Second operand has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:04:20,089 INFO L93 Difference]: Finished difference Result 2386 states and 3219 transitions. [2023-12-25 00:04:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 00:04:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-25 00:04:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:04:20,093 INFO L225 Difference]: With dead ends: 2386 [2023-12-25 00:04:20,093 INFO L226 Difference]: Without dead ends: 2358 [2023-12-25 00:04:20,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=184, Invalid=3238, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 00:04:20,094 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 83 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:04:20,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1568 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 00:04:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2023-12-25 00:04:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2305. [2023-12-25 00:04:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.3598090277777777) internal successors, (3133), 2304 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3133 transitions. [2023-12-25 00:04:23,674 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3133 transitions. Word has length 41 [2023-12-25 00:04:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:04:23,674 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3133 transitions. [2023-12-25 00:04:23,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3133 transitions. [2023-12-25 00:04:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:04:23,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:04:23,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:04:23,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2023-12-25 00:04:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:23,882 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:04:23,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:04:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash -130192944, now seen corresponding path program 80 times [2023-12-25 00:04:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:04:23,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053622230] [2023-12-25 00:04:23,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:04:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:23,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:04:23,884 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:04:23,885 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 (95)] Waiting until timeout for monitored process [2023-12-25 00:04:24,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:04:24,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:04:24,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 00:04:24,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:04:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 00:04:24,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 00:04:26,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053622230] [2023-12-25 00:04:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053622230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:26,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 52 [2023-12-25 00:04:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021878937] [2023-12-25 00:04:26,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 00:04:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 00:04:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2506, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 00:04:26,455 INFO L87 Difference]: Start difference. First operand 2305 states and 3133 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:04:33,301 INFO L93 Difference]: Finished difference Result 2390 states and 3234 transitions. [2023-12-25 00:04:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 00:04:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 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 41 [2023-12-25 00:04:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:04:33,306 INFO L225 Difference]: With dead ends: 2390 [2023-12-25 00:04:33,306 INFO L226 Difference]: Without dead ends: 2361 [2023-12-25 00:04:33,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2023-12-25 00:04:33,307 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 96 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:04:33,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1379 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 00:04:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2023-12-25 00:04:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2311. [2023-12-25 00:04:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2310 states have (on average 1.3632034632034633) internal successors, (3149), 2310 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3149 transitions. [2023-12-25 00:04:36,876 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3149 transitions. Word has length 41 [2023-12-25 00:04:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:04:36,876 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3149 transitions. [2023-12-25 00:04:36,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3149 transitions. [2023-12-25 00:04:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:04:36,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:04:36,879 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:04:36,891 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 (95)] Forceful destruction successful, exit code 0 [2023-12-25 00:04:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:37,087 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:04:37,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:04:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1252692332, now seen corresponding path program 81 times [2023-12-25 00:04:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:04:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631267970] [2023-12-25 00:04:37,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:04:37,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:04:37,090 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:04:37,116 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 (96)] Waiting until timeout for monitored process [2023-12-25 00:04:37,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:04:37,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:04:37,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 00:04:37,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:04:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 00:04:37,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 00:04:38,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631267970] [2023-12-25 00:04:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631267970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:38,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 41 [2023-12-25 00:04:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061945037] [2023-12-25 00:04:38,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:38,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 00:04:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 00:04:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 00:04:38,914 INFO L87 Difference]: Start difference. First operand 2311 states and 3149 transitions. Second operand has 41 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:04:43,659 INFO L93 Difference]: Finished difference Result 2388 states and 3243 transitions. [2023-12-25 00:04:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 00:04:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 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 41 [2023-12-25 00:04:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:04:43,662 INFO L225 Difference]: With dead ends: 2388 [2023-12-25 00:04:43,662 INFO L226 Difference]: Without dead ends: 2365 [2023-12-25 00:04:43,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=2576, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 00:04:43,663 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 60 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:04:43,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 994 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 00:04:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-25 00:04:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2329. [2023-12-25 00:04:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2328 states have (on average 1.3642611683848798) internal successors, (3176), 2328 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3176 transitions. [2023-12-25 00:04:46,419 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3176 transitions. Word has length 41 [2023-12-25 00:04:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:04:46,419 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 3176 transitions. [2023-12-25 00:04:46,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3176 transitions. [2023-12-25 00:04:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:04:46,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:04:46,421 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:04:46,429 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 (96)] Forceful destruction successful, exit code 0 [2023-12-25 00:04:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:46,628 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:04:46,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:04:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1865186768, now seen corresponding path program 82 times [2023-12-25 00:04:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:04:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358315479] [2023-12-25 00:04:46,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:04:46,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:04:46,630 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:04:46,643 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 (97)] Waiting until timeout for monitored process [2023-12-25 00:04:46,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:04:46,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:04:46,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 00:04:46,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:04:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 00:04:47,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 00:04:48,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:48,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358315479] [2023-12-25 00:04:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358315479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:48,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:48,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2023-12-25 00:04:48,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67355691] [2023-12-25 00:04:48,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:48,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 00:04:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 00:04:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1518, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 00:04:48,601 INFO L87 Difference]: Start difference. First operand 2329 states and 3176 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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) [2023-12-25 00:04:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:04:54,363 INFO L93 Difference]: Finished difference Result 2403 states and 3269 transitions. [2023-12-25 00:04:54,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 00:04:54,365 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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 41 [2023-12-25 00:04:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:04:54,368 INFO L225 Difference]: With dead ends: 2403 [2023-12-25 00:04:54,368 INFO L226 Difference]: Without dead ends: 2398 [2023-12-25 00:04:54,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 00:04:54,369 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 49 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:04:54,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 824 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 00:04:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2023-12-25 00:04:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2367. [2023-12-25 00:04:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2366 states have (on average 1.363905325443787) internal successors, (3227), 2366 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:04:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3227 transitions. [2023-12-25 00:04:57,988 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3227 transitions. Word has length 41 [2023-12-25 00:04:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:04:57,989 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3227 transitions. [2023-12-25 00:04:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 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) [2023-12-25 00:04:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3227 transitions. [2023-12-25 00:04:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:04:57,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:04:57,991 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:04:57,996 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 (97)] Forceful destruction successful, exit code 0 [2023-12-25 00:04:58,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:58,196 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:04:58,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:04:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash 261593420, now seen corresponding path program 83 times [2023-12-25 00:04:58,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:04:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115205436] [2023-12-25 00:04:58,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:04:58,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:04:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:04:58,198 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:04:58,227 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 (98)] Waiting until timeout for monitored process [2023-12-25 00:04:58,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-25 00:04:58,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:04:58,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 00:04:58,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:04:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:04:58,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:04:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:04:59,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:04:59,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115205436] [2023-12-25 00:04:59,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115205436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:04:59,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:04:59,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-12-25 00:04:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677395200] [2023-12-25 00:04:59,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:04:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 00:04:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:04:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 00:04:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 00:04:59,158 INFO L87 Difference]: Start difference. First operand 2367 states and 3227 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 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) [2023-12-25 00:05:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:05:38,296 INFO L93 Difference]: Finished difference Result 4971 states and 6989 transitions. [2023-12-25 00:05:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-25 00:05:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 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 41 [2023-12-25 00:05:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:05:38,304 INFO L225 Difference]: With dead ends: 4971 [2023-12-25 00:05:38,304 INFO L226 Difference]: Without dead ends: 3950 [2023-12-25 00:05:38,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5506 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=4299, Invalid=12731, Unknown=0, NotChecked=0, Total=17030 [2023-12-25 00:05:38,323 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1314 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 00:05:38,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 941 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 00:05:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2023-12-25 00:05:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 2352. [2023-12-25 00:05:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.357720119098256) internal successors, (3192), 2351 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:05:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3192 transitions. [2023-12-25 00:05:42,097 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3192 transitions. Word has length 41 [2023-12-25 00:05:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:05:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3192 transitions. [2023-12-25 00:05:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 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) [2023-12-25 00:05:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3192 transitions. [2023-12-25 00:05:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:05:42,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:05:42,100 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:05:42,105 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 (98)] Forceful destruction successful, exit code 0 [2023-12-25 00:05:42,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:05:42,305 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:05:42,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:05:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1458839526, now seen corresponding path program 84 times [2023-12-25 00:05:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:05:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162592709] [2023-12-25 00:05:42,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:05:42,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:05:42,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:05:42,307 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:05:42,307 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 (99)] Waiting until timeout for monitored process [2023-12-25 00:05:42,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 00:05:42,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:05:42,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 00:05:42,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:05:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:05:46,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:06:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:06:01,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:06:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162592709] [2023-12-25 00:06:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162592709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:06:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:06:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-12-25 00:06:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677956290] [2023-12-25 00:06:01,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:06:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 00:06:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:06:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 00:06:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 00:06:01,648 INFO L87 Difference]: Start difference. First operand 2352 states and 3192 transitions. Second operand has 52 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:06:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:06:32,482 INFO L93 Difference]: Finished difference Result 3280 states and 4207 transitions. [2023-12-25 00:06:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 00:06:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 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 42 [2023-12-25 00:06:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:06:32,489 INFO L225 Difference]: With dead ends: 3280 [2023-12-25 00:06:32,489 INFO L226 Difference]: Without dead ends: 3147 [2023-12-25 00:06:32,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=1293, Invalid=7827, Unknown=0, NotChecked=0, Total=9120 [2023-12-25 00:06:32,490 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 402 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-25 00:06:32,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1491 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-25 00:06:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-12-25 00:06:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2390. [2023-12-25 00:06:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 1.362494767685224) internal successors, (3255), 2389 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:06:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3255 transitions. [2023-12-25 00:06:36,399 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3255 transitions. Word has length 42 [2023-12-25 00:06:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:06:36,399 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 3255 transitions. [2023-12-25 00:06:36,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:06:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3255 transitions. [2023-12-25 00:06:36,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:06:36,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:06:36,401 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:06:36,407 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 (99)] Forceful destruction successful, exit code 0 [2023-12-25 00:06:36,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:06:36,607 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:06:36,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:06:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash 212605325, now seen corresponding path program 85 times [2023-12-25 00:06:36,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:06:36,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809189913] [2023-12-25 00:06:36,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:06:36,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:06:36,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:06:36,609 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:06:36,640 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 (100)] Waiting until timeout for monitored process [2023-12-25 00:06:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:06:36,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-25 00:06:36,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:06:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:06:40,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:06:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:06:56,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:06:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809189913] [2023-12-25 00:06:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809189913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:06:56,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:06:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-12-25 00:06:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394548453] [2023-12-25 00:06:56,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:06:56,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 00:06:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:06:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 00:06:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2316, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 00:06:56,870 INFO L87 Difference]: Start difference. First operand 2390 states and 3255 transitions. Second operand has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:07:16,347 INFO L93 Difference]: Finished difference Result 2449 states and 3322 transitions. [2023-12-25 00:07:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-25 00:07:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-25 00:07:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:07:16,352 INFO L225 Difference]: With dead ends: 2449 [2023-12-25 00:07:16,352 INFO L226 Difference]: Without dead ends: 2423 [2023-12-25 00:07:16,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=1043, Invalid=6097, Unknown=0, NotChecked=0, Total=7140 [2023-12-25 00:07:16,353 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 320 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:07:16,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1516 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-25 00:07:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-12-25 00:07:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2398. [2023-12-25 00:07:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 1.361284939507718) internal successors, (3263), 2397 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3263 transitions. [2023-12-25 00:07:20,400 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3263 transitions. Word has length 42 [2023-12-25 00:07:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:07:20,400 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 3263 transitions. [2023-12-25 00:07:20,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3263 transitions. [2023-12-25 00:07:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:07:20,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:07:20,407 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:07:20,411 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 (100)] Ended with exit code 0 [2023-12-25 00:07:20,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:20,612 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:07:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:07:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1631973934, now seen corresponding path program 86 times [2023-12-25 00:07:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:07:20,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150940471] [2023-12-25 00:07:20,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:07:20,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:20,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:07:20,614 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:07:20,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2023-12-25 00:07:20,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:07:20,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:07:20,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 00:07:20,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:07:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 00:07:20,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:07:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 00:07:21,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:07:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150940471] [2023-12-25 00:07:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150940471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:07:21,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:07:21,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-25 00:07:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260092404] [2023-12-25 00:07:21,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:07:21,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 00:07:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:07:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 00:07:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-12-25 00:07:21,170 INFO L87 Difference]: Start difference. First operand 2398 states and 3263 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 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) [2023-12-25 00:07:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:07:25,123 INFO L93 Difference]: Finished difference Result 2498 states and 3363 transitions. [2023-12-25 00:07:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-25 00:07:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 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 42 [2023-12-25 00:07:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:07:25,126 INFO L225 Difference]: With dead ends: 2498 [2023-12-25 00:07:25,126 INFO L226 Difference]: Without dead ends: 2296 [2023-12-25 00:07:25,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 00:07:25,127 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 00:07:25,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 426 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 00:07:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-12-25 00:07:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2296. [2023-12-25 00:07:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 1.366884531590414) internal successors, (3137), 2295 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3137 transitions. [2023-12-25 00:07:28,061 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3137 transitions. Word has length 42 [2023-12-25 00:07:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:07:28,061 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3137 transitions. [2023-12-25 00:07:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 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) [2023-12-25 00:07:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3137 transitions. [2023-12-25 00:07:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:07:28,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:07:28,063 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:07:28,067 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 (101)] Forceful destruction successful, exit code 0 [2023-12-25 00:07:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:28,267 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:07:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:07:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2015407287, now seen corresponding path program 87 times [2023-12-25 00:07:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:07:28,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724662288] [2023-12-25 00:07:28,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:07:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:07:28,269 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:07:28,270 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 (102)] Waiting until timeout for monitored process [2023-12-25 00:07:28,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-25 00:07:28,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:07:28,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 00:07:28,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:07:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:07:28,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:07:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-25 00:07:29,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:07:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724662288] [2023-12-25 00:07:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724662288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:07:29,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:07:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-25 00:07:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823778827] [2023-12-25 00:07:29,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:07:29,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 00:07:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:07:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 00:07:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-25 00:07:29,120 INFO L87 Difference]: Start difference. First operand 2296 states and 3137 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:07:34,330 INFO L93 Difference]: Finished difference Result 2365 states and 3208 transitions. [2023-12-25 00:07:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-25 00:07:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-25 00:07:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:07:34,334 INFO L225 Difference]: With dead ends: 2365 [2023-12-25 00:07:34,334 INFO L226 Difference]: Without dead ends: 2349 [2023-12-25 00:07:34,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=398, Invalid=2052, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 00:07:34,334 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 133 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:07:34,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 450 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 00:07:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-12-25 00:07:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2323. [2023-12-25 00:07:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2322 states have (on average 1.3626184323858743) internal successors, (3164), 2322 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3164 transitions. [2023-12-25 00:07:37,401 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3164 transitions. Word has length 42 [2023-12-25 00:07:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:07:37,401 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 3164 transitions. [2023-12-25 00:07:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:07:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3164 transitions. [2023-12-25 00:07:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:07:37,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:07:37,403 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:07:37,407 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 (102)] Ended with exit code 0 [2023-12-25 00:07:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:37,608 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:07:37,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:07:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash 465565358, now seen corresponding path program 88 times [2023-12-25 00:07:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:07:37,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146592232] [2023-12-25 00:07:37,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:07:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:07:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:07:37,610 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 00:07:37,636 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 (103)] Waiting until timeout for monitored process [2023-12-25 00:07:37,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:07:37,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:07:37,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 00:07:37,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:07:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:07:37,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:07:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 00:07:38,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:07:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146592232] [2023-12-25 00:07:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146592232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:07:38,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:07:38,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2023-12-25 00:07:38,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143703067] [2023-12-25 00:07:38,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:07:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 00:07:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:07:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 00:07:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 00:07:38,732 INFO L87 Difference]: Start difference. First operand 2323 states and 3164 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-25 00:09:32,366 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 (103)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 00:09:32,366 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 [2023-12-25 00:09:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-25 00:09:32,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6765 ImplicationChecksByTransitivity, 110.1s TimeCoverageRelationStatistics Valid=4087, Invalid=16219, Unknown=0, NotChecked=0, Total=20306 [2023-12-25 00:09:32,394 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 986 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:09:32,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 620 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 00:09:32,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:09:32,399 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 (103)] Forceful destruction successful, exit code 0 [2023-12-25 00:09:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:09:32,596 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2323states) and FLOYD_HOARE automaton (currently 127 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 143 known predicates. [2023-12-25 00:09:32,603 INFO L445 BasicCegarLoop]: Path program histogram: [88, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:09:32,606 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:09:32,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:09:32 BoogieIcfgContainer [2023-12-25 00:09:32,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:09:32,608 INFO L158 Benchmark]: Toolchain (without parser) took 889416.77ms. Allocated memory was 241.2MB in the beginning and 1.0GB in the end (delta: 801.1MB). Free memory was 188.7MB in the beginning and 755.9MB in the end (delta: -567.2MB). Peak memory consumption was 234.5MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 191.9MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.46ms. Allocated memory is still 241.2MB. Free memory was 188.2MB in the beginning and 176.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.92ms. Allocated memory is still 241.2MB. Free memory was 176.7MB in the beginning and 174.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: Boogie Preprocessor took 28.49ms. Allocated memory is still 241.2MB. Free memory was 174.6MB in the beginning and 172.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: RCFGBuilder took 314.29ms. Allocated memory is still 241.2MB. Free memory was 172.5MB in the beginning and 157.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L158 Benchmark]: TraceAbstraction took 888820.19ms. Allocated memory was 241.2MB in the beginning and 1.0GB in the end (delta: 801.1MB). Free memory was 157.3MB in the beginning and 755.9MB in the end (delta: -598.6MB). Peak memory consumption was 203.0MB. Max. memory is 8.0GB. [2023-12-25 00:09:32,608 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 191.9MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.46ms. Allocated memory is still 241.2MB. Free memory was 188.2MB in the beginning and 176.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.92ms. Allocated memory is still 241.2MB. Free memory was 176.7MB in the beginning and 174.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.49ms. Allocated memory is still 241.2MB. Free memory was 174.6MB in the beginning and 172.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 314.29ms. Allocated memory is still 241.2MB. Free memory was 172.5MB in the beginning and 157.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 888820.19ms. Allocated memory was 241.2MB in the beginning and 1.0GB in the end (delta: 801.1MB). Free memory was 157.3MB in the beginning and 755.9MB in the end (delta: -598.6MB). Peak memory consumption was 203.0MB. 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 (2323states) and FLOYD_HOARE automaton (currently 127 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 143 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 888.8s, OverallIterations: 102, TraceHistogramMax: 12, PathProgramHistogramMax: 88, EmptinessCheckTime: 0.1s, AutomataDifference: 577.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15249 SdHoareTripleChecker+Valid, 77.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15249 mSDsluCounter, 62158 SdHoareTripleChecker+Invalid, 68.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58886 mSDsCounter, 1516 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63653 IncrementalHoareTripleChecker+Invalid, 65169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1516 mSolverCounterUnsat, 3272 mSDtfsCounter, 63653 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7775 GetRequests, 3411 SyntacticMatches, 10 SemanticMatches, 4353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55429 ImplicationChecksByTransitivity, 517.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2398occurred in iteration=99, InterpolantAutomatonStates: 2828, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 97.5s AutomataMinimizationTime, 101 MinimizatonAttempts, 13211 StatesRemovedByMinimization, 94 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 185.6s InterpolantComputationTime, 3146 NumberOfCodeBlocks, 3146 NumberOfCodeBlocksAsserted, 246 NumberOfCheckSat, 5970 ConstructedInterpolants, 22 QuantifiedInterpolants, 41757 SizeOfPredicates, 620 NumberOfNonLiveVariables, 10653 ConjunctsInSsa, 2148 ConjunctsInUnsatCore, 196 InterpolantComputations, 8 PerfectInterpolantSequences, 2970/9396 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