/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:01:44,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:01:44,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 18:01:44,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:01:44,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:01:44,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:01:44,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:01:44,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:01:44,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:01:44,734 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:01:44,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:01:44,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:01:44,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:01:44,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:01:44,737 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:01:44,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:01:44,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:01:44,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:01:44,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:01:44,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:01:44,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:01:44,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:01:44,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:01:44,738 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:01:44,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:01:44,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:01:44,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:01:44,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:01:44,741 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:01:44,742 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:01:44,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:01:44,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:01:44,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:01:44,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:01:44,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:01:44,743 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:01:44,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:01:44,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:01:44,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:01:44,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:01:44,911 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:01:44,912 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:01:44,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-16 18:01:45,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:01:46,096 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:01:46,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-16 18:01:46,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf76d487/7351a5393cb94a47b7f35df358169f21/FLAGfeb8acc01 [2023-12-16 18:01:46,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf76d487/7351a5393cb94a47b7f35df358169f21 [2023-12-16 18:01:46,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:01:46,114 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:01:46,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:01:46,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:01:46,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:01:46,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fb1388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46, skipping insertion in model container [2023-12-16 18:01:46,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,157 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:01:46,298 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2023-12-16 18:01:46,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:01:46,309 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:01:46,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2023-12-16 18:01:46,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:01:46,351 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:01:46,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46 WrapperNode [2023-12-16 18:01:46,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:01:46,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:01:46,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:01:46,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:01:46,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,398 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 209 [2023-12-16 18:01:46,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:01:46,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:01:46,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:01:46,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:01:46,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,420 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]. [2023-12-16 18:01:46,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:01:46,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:01:46,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:01:46,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:01:46,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (1/1) ... [2023-12-16 18:01:46,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:01:46,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:01:46,465 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) [2023-12-16 18:01:46,467 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 [2023-12-16 18:01:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:01:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:01:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:01:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:01:46,577 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:01:46,581 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:01:46,912 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:01:46,935 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:01:46,935 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:01:46,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:46 BoogieIcfgContainer [2023-12-16 18:01:46,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:01:46,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:01:46,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:01:46,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:01:46,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:01:46" (1/3) ... [2023-12-16 18:01:46,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea216ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:46, skipping insertion in model container [2023-12-16 18:01:46,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:46" (2/3) ... [2023-12-16 18:01:46,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea216ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:46, skipping insertion in model container [2023-12-16 18:01:46,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:46" (3/3) ... [2023-12-16 18:01:46,941 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-16 18:01:46,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:01:46,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:01:46,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:01:46,988 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;@afa8a90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:01:46,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:01:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 18:01:46,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:46,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:46,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:47,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1356555257, now seen corresponding path program 1 times [2023-12-16 18:01:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841131716] [2023-12-16 18:01:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:47,010 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 [2023-12-16 18:01:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:47,012 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) [2023-12-16 18:01:47,013 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 [2023-12-16 18:01:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:47,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 18:01:47,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:47,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:47,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841131716] [2023-12-16 18:01:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841131716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 18:01:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303520921] [2023-12-16 18:01:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 18:01:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 18:01:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:01:47,198 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) [2023-12-16 18:01:47,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:47,235 INFO L93 Difference]: Finished difference Result 85 states and 143 transitions. [2023-12-16 18:01:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 18:01:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 [2023-12-16 18:01:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:47,244 INFO L225 Difference]: With dead ends: 85 [2023-12-16 18:01:47,244 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 18:01:47,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:01:47,250 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:47,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 18:01:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 18:01:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.7) internal successors, (85), 50 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) [2023-12-16 18:01:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2023-12-16 18:01:47,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 16 [2023-12-16 18:01:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:47,284 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2023-12-16 18:01:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) [2023-12-16 18:01:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2023-12-16 18:01:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 18:01:47,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:47,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:47,300 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 [2023-12-16 18:01:47,488 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 [2023-12-16 18:01:47,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:47,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash 769749243, now seen corresponding path program 1 times [2023-12-16 18:01:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612655222] [2023-12-16 18:01:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:47,491 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) [2023-12-16 18:01:47,493 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 [2023-12-16 18:01:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:47,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:01:47,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:47,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:47,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612655222] [2023-12-16 18:01:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612655222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:01:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344506411] [2023-12-16 18:01:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:47,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:01:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:01:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:47,599 INFO L87 Difference]: Start difference. First operand 51 states and 85 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) [2023-12-16 18:01:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:47,644 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2023-12-16 18:01:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:01:47,645 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 [2023-12-16 18:01:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:47,646 INFO L225 Difference]: With dead ends: 85 [2023-12-16 18:01:47,646 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 18:01:47,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:47,647 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:47,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 18:01:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 18:01:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2023-12-16 18:01:47,652 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 16 [2023-12-16 18:01:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:47,652 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2023-12-16 18:01:47,652 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) [2023-12-16 18:01:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2023-12-16 18:01:47,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 18:01:47,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:47,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:47,665 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:47,853 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 [2023-12-16 18:01:47,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 84756620, now seen corresponding path program 1 times [2023-12-16 18:01:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560430549] [2023-12-16 18:01:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:47,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:47,857 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) [2023-12-16 18:01:47,863 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 [2023-12-16 18:01:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:47,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:01:47,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:48,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:48,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:48,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560430549] [2023-12-16 18:01:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560430549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:48,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:01:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216627201] [2023-12-16 18:01:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:48,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:01:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:48,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:01:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:01:48,120 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2023-12-16 18:01:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:48,209 INFO L93 Difference]: Finished difference Result 175 states and 265 transitions. [2023-12-16 18:01:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:01:48,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 31 [2023-12-16 18:01:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:48,214 INFO L225 Difference]: With dead ends: 175 [2023-12-16 18:01:48,214 INFO L226 Difference]: Without dead ends: 144 [2023-12-16 18:01:48,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:01:48,216 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 207 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:48,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 188 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:01:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-16 18:01:48,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 109. [2023-12-16 18:01:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.5) internal successors, (162), 108 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) [2023-12-16 18:01:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2023-12-16 18:01:48,239 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 31 [2023-12-16 18:01:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:48,239 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2023-12-16 18:01:48,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2023-12-16 18:01:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2023-12-16 18:01:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 18:01:48,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:48,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:48,244 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 [2023-12-16 18:01:48,442 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 [2023-12-16 18:01:48,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:48,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -912973924, now seen corresponding path program 1 times [2023-12-16 18:01:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:48,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103965611] [2023-12-16 18:01:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:48,444 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 [2023-12-16 18:01:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:48,445 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) [2023-12-16 18:01:48,467 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 [2023-12-16 18:01:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:48,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:48,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:48,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:48,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103965611] [2023-12-16 18:01:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103965611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093776850] [2023-12-16 18:01:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:48,528 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2023-12-16 18:01:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:48,549 INFO L93 Difference]: Finished difference Result 271 states and 418 transitions. [2023-12-16 18:01:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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 33 [2023-12-16 18:01:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:48,550 INFO L225 Difference]: With dead ends: 271 [2023-12-16 18:01:48,551 INFO L226 Difference]: Without dead ends: 182 [2023-12-16 18:01:48,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:48,552 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:48,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 103 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-16 18:01:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 177. [2023-12-16 18:01:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5) internal successors, (264), 176 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2023-12-16 18:01:48,561 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 33 [2023-12-16 18:01:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:48,561 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2023-12-16 18:01:48,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2023-12-16 18:01:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2023-12-16 18:01:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 18:01:48,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:48,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:48,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:48,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:48,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:48,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1815029063, now seen corresponding path program 1 times [2023-12-16 18:01:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:48,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549666398] [2023-12-16 18:01:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:48,766 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 [2023-12-16 18:01:48,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:48,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:01:48,770 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 [2023-12-16 18:01:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:48,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:01:48,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:48,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:48,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549666398] [2023-12-16 18:01:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549666398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:01:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264969370] [2023-12-16 18:01:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:48,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:01:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:01:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:48,833 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:48,853 INFO L93 Difference]: Finished difference Result 191 states and 281 transitions. [2023-12-16 18:01:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:01:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 18:01:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:48,854 INFO L225 Difference]: With dead ends: 191 [2023-12-16 18:01:48,854 INFO L226 Difference]: Without dead ends: 189 [2023-12-16 18:01:48,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:48,855 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:48,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 187 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-16 18:01:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2023-12-16 18:01:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4728260869565217) internal successors, (271), 184 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 271 transitions. [2023-12-16 18:01:48,863 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 271 transitions. Word has length 34 [2023-12-16 18:01:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:48,863 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 271 transitions. [2023-12-16 18:01:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 271 transitions. [2023-12-16 18:01:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 18:01:48,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:48,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:48,882 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 [2023-12-16 18:01:49,079 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 [2023-12-16 18:01:49,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:49,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1381419564, now seen corresponding path program 1 times [2023-12-16 18:01:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888190899] [2023-12-16 18:01:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:49,081 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 [2023-12-16 18:01:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:49,082 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) [2023-12-16 18:01:49,083 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 [2023-12-16 18:01:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:49,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:49,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:49,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:49,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888190899] [2023-12-16 18:01:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888190899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:49,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237220911] [2023-12-16 18:01:49,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:49,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,179 INFO L87 Difference]: Start difference. First operand 185 states and 271 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2023-12-16 18:01:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:49,194 INFO L93 Difference]: Finished difference Result 491 states and 731 transitions. [2023-12-16 18:01:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 18:01:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:49,196 INFO L225 Difference]: With dead ends: 491 [2023-12-16 18:01:49,196 INFO L226 Difference]: Without dead ends: 326 [2023-12-16 18:01:49,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,200 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:49,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 144 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-12-16 18:01:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2023-12-16 18:01:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.4643962848297214) internal successors, (473), 323 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 473 transitions. [2023-12-16 18:01:49,211 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 473 transitions. Word has length 35 [2023-12-16 18:01:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:49,211 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 473 transitions. [2023-12-16 18:01:49,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2023-12-16 18:01:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 473 transitions. [2023-12-16 18:01:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 18:01:49,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:49,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:49,218 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 (7)] Ended with exit code 0 [2023-12-16 18:01:49,418 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 [2023-12-16 18:01:49,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:49,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:49,419 INFO L85 PathProgramCache]: Analyzing trace with hash -492686124, now seen corresponding path program 1 times [2023-12-16 18:01:49,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:49,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241973517] [2023-12-16 18:01:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:49,419 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 [2023-12-16 18:01:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:49,420 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) [2023-12-16 18:01:49,421 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 [2023-12-16 18:01:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:49,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:49,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:49,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:49,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:49,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241973517] [2023-12-16 18:01:49,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241973517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:49,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:49,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930090823] [2023-12-16 18:01:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:49,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:49,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,485 INFO L87 Difference]: Start difference. First operand 324 states and 473 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2023-12-16 18:01:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:49,502 INFO L93 Difference]: Finished difference Result 884 states and 1295 transitions. [2023-12-16 18:01:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 18:01:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:49,505 INFO L225 Difference]: With dead ends: 884 [2023-12-16 18:01:49,505 INFO L226 Difference]: Without dead ends: 580 [2023-12-16 18:01:49,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,507 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 35 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:49,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 146 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-16 18:01:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 578. [2023-12-16 18:01:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.4367417677642982) internal successors, (829), 577 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 829 transitions. [2023-12-16 18:01:49,521 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 829 transitions. Word has length 35 [2023-12-16 18:01:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:49,521 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 829 transitions. [2023-12-16 18:01:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2023-12-16 18:01:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 829 transitions. [2023-12-16 18:01:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 18:01:49,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:49,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:49,552 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 [2023-12-16 18:01:49,728 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 [2023-12-16 18:01:49,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:49,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:49,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1137438489, now seen corresponding path program 1 times [2023-12-16 18:01:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082846859] [2023-12-16 18:01:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:49,729 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 [2023-12-16 18:01:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:49,730 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) [2023-12-16 18:01:49,732 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 [2023-12-16 18:01:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:49,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:49,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:49,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:49,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:49,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082846859] [2023-12-16 18:01:49,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082846859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:49,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:49,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506843208] [2023-12-16 18:01:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:49,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,800 INFO L87 Difference]: Start difference. First operand 578 states and 829 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2023-12-16 18:01:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:49,826 INFO L93 Difference]: Finished difference Result 1161 states and 1699 transitions. [2023-12-16 18:01:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 37 [2023-12-16 18:01:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:49,830 INFO L225 Difference]: With dead ends: 1161 [2023-12-16 18:01:49,830 INFO L226 Difference]: Without dead ends: 834 [2023-12-16 18:01:49,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:49,831 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 36 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:49,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-16 18:01:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 832. [2023-12-16 18:01:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.4332129963898916) internal successors, (1191), 831 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) [2023-12-16 18:01:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1191 transitions. [2023-12-16 18:01:49,852 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1191 transitions. Word has length 37 [2023-12-16 18:01:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:49,853 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1191 transitions. [2023-12-16 18:01:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2023-12-16 18:01:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1191 transitions. [2023-12-16 18:01:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 18:01:49,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:49,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:49,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:50,055 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 [2023-12-16 18:01:50,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:50,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash 124429978, now seen corresponding path program 1 times [2023-12-16 18:01:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083087351] [2023-12-16 18:01:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:50,057 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 [2023-12-16 18:01:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:50,058 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) [2023-12-16 18:01:50,058 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 [2023-12-16 18:01:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:50,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:50,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:50,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:50,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083087351] [2023-12-16 18:01:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083087351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920487787] [2023-12-16 18:01:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:50,145 INFO L87 Difference]: Start difference. First operand 832 states and 1191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2023-12-16 18:01:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:50,164 INFO L93 Difference]: Finished difference Result 1427 states and 2061 transitions. [2023-12-16 18:01:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 49 [2023-12-16 18:01:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:50,167 INFO L225 Difference]: With dead ends: 1427 [2023-12-16 18:01:50,167 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 18:01:50,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:50,169 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 143 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 [2023-12-16 18:01:50,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 143 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 18:01:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2023-12-16 18:01:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.4299674267100977) internal successors, (878), 614 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 878 transitions. [2023-12-16 18:01:50,184 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 878 transitions. Word has length 49 [2023-12-16 18:01:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:50,184 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 878 transitions. [2023-12-16 18:01:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2023-12-16 18:01:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 878 transitions. [2023-12-16 18:01:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 18:01:50,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:50,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:50,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:50,388 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 [2023-12-16 18:01:50,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:50,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 854869599, now seen corresponding path program 1 times [2023-12-16 18:01:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547398123] [2023-12-16 18:01:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:50,389 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 [2023-12-16 18:01:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:50,390 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) [2023-12-16 18:01:50,391 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 (11)] Waiting until timeout for monitored process [2023-12-16 18:01:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:50,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:01:50,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:50,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:51,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547398123] [2023-12-16 18:01:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547398123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:51,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:51,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:01:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037288125] [2023-12-16 18:01:51,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:51,113 INFO L87 Difference]: Start difference. First operand 615 states and 878 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:52,001 INFO L93 Difference]: Finished difference Result 2143 states and 3049 transitions. [2023-12-16 18:01:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 18:01:52,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 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 51 [2023-12-16 18:01:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:52,006 INFO L225 Difference]: With dead ends: 2143 [2023-12-16 18:01:52,006 INFO L226 Difference]: Without dead ends: 1565 [2023-12-16 18:01:52,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-16 18:01:52,007 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 540 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:52,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 490 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:01:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-12-16 18:01:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1191. [2023-12-16 18:01:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 1.4336134453781513) internal successors, (1706), 1190 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1706 transitions. [2023-12-16 18:01:52,054 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1706 transitions. Word has length 51 [2023-12-16 18:01:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:52,054 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1706 transitions. [2023-12-16 18:01:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1706 transitions. [2023-12-16 18:01:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 18:01:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:52,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:52,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:52,257 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 [2023-12-16 18:01:52,258 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:52,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1839667455, now seen corresponding path program 1 times [2023-12-16 18:01:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462161902] [2023-12-16 18:01:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:52,259 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 [2023-12-16 18:01:52,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:52,260 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) [2023-12-16 18:01:52,264 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 [2023-12-16 18:01:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:52,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:52,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:52,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:52,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462161902] [2023-12-16 18:01:52,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462161902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:52,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:52,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900315178] [2023-12-16 18:01:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:52,330 INFO L87 Difference]: Start difference. First operand 1191 states and 1706 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2023-12-16 18:01:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:52,351 INFO L93 Difference]: Finished difference Result 1771 states and 2542 transitions. [2023-12-16 18:01:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 53 [2023-12-16 18:01:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:52,354 INFO L225 Difference]: With dead ends: 1771 [2023-12-16 18:01:52,354 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 18:01:52,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:52,355 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 28 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 128 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 [2023-12-16 18:01:52,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 128 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 18:01:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2023-12-16 18:01:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.4006514657980456) internal successors, (860), 614 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 860 transitions. [2023-12-16 18:01:52,372 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 860 transitions. Word has length 53 [2023-12-16 18:01:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:52,372 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 860 transitions. [2023-12-16 18:01:52,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2023-12-16 18:01:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 860 transitions. [2023-12-16 18:01:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:01:52,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:52,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:52,375 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 [2023-12-16 18:01:52,575 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 [2023-12-16 18:01:52,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:52,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash 979138397, now seen corresponding path program 1 times [2023-12-16 18:01:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760957183] [2023-12-16 18:01:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:52,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:52,577 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) [2023-12-16 18:01:52,600 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 (13)] Waiting until timeout for monitored process [2023-12-16 18:01:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:52,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:01:52,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:53,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:53,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:53,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760957183] [2023-12-16 18:01:53,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760957183] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:53,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:53,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:01:53,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854185104] [2023-12-16 18:01:53,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:53,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:53,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:53,195 INFO L87 Difference]: Start difference. First operand 615 states and 860 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:53,579 INFO L93 Difference]: Finished difference Result 1229 states and 1723 transitions. [2023-12-16 18:01:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 18:01:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:01:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:53,582 INFO L225 Difference]: With dead ends: 1229 [2023-12-16 18:01:53,582 INFO L226 Difference]: Without dead ends: 651 [2023-12-16 18:01:53,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:01:53,583 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 205 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:53,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 303 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:01:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-16 18:01:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 625. [2023-12-16 18:01:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 1.3974358974358974) internal successors, (872), 624 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) [2023-12-16 18:01:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 872 transitions. [2023-12-16 18:01:53,600 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 872 transitions. Word has length 54 [2023-12-16 18:01:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:53,601 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 872 transitions. [2023-12-16 18:01:53,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 872 transitions. [2023-12-16 18:01:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 18:01:53,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:53,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:53,612 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 [2023-12-16 18:01:53,803 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 [2023-12-16 18:01:53,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:53,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash -564553527, now seen corresponding path program 1 times [2023-12-16 18:01:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044651416] [2023-12-16 18:01:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:53,804 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 [2023-12-16 18:01:53,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:53,805 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) [2023-12-16 18:01:53,806 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 [2023-12-16 18:01:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:53,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:53,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:53,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:53,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044651416] [2023-12-16 18:01:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044651416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:53,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:53,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430225314] [2023-12-16 18:01:53,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:53,897 INFO L87 Difference]: Start difference. First operand 625 states and 872 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-12-16 18:01:53,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:53,911 INFO L93 Difference]: Finished difference Result 917 states and 1282 transitions. [2023-12-16 18:01:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:53,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 56 [2023-12-16 18:01:53,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:53,913 INFO L225 Difference]: With dead ends: 917 [2023-12-16 18:01:53,913 INFO L226 Difference]: Without dead ends: 339 [2023-12-16 18:01:53,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:53,914 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 24 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 113 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 [2023-12-16 18:01:53,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-16 18:01:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2023-12-16 18:01:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3452380952380953) internal successors, (452), 336 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 452 transitions. [2023-12-16 18:01:53,924 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 452 transitions. Word has length 56 [2023-12-16 18:01:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:53,924 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 452 transitions. [2023-12-16 18:01:53,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-12-16 18:01:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 452 transitions. [2023-12-16 18:01:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 18:01:53,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:53,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:53,930 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 [2023-12-16 18:01:54,126 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 [2023-12-16 18:01:54,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:54,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 351465427, now seen corresponding path program 1 times [2023-12-16 18:01:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531580887] [2023-12-16 18:01:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:54,128 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 [2023-12-16 18:01:54,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:54,129 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) [2023-12-16 18:01:54,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 18:01:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:54,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:01:54,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:54,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:54,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:54,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531580887] [2023-12-16 18:01:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531580887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:54,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:01:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453323164] [2023-12-16 18:01:54,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:54,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:54,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:54,726 INFO L87 Difference]: Start difference. First operand 337 states and 452 transitions. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:55,359 INFO L93 Difference]: Finished difference Result 907 states and 1225 transitions. [2023-12-16 18:01:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 18:01:55,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-16 18:01:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:55,361 INFO L225 Difference]: With dead ends: 907 [2023-12-16 18:01:55,362 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 18:01:55,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-16 18:01:55,362 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 336 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:55,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 534 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:01:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 18:01:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 553. [2023-12-16 18:01:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.3333333333333333) internal successors, (736), 552 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 736 transitions. [2023-12-16 18:01:55,377 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 736 transitions. Word has length 57 [2023-12-16 18:01:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:55,377 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 736 transitions. [2023-12-16 18:01:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 736 transitions. [2023-12-16 18:01:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 18:01:55,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:55,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:55,383 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 [2023-12-16 18:01:55,580 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 [2023-12-16 18:01:55,581 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:55,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1204782347, now seen corresponding path program 1 times [2023-12-16 18:01:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:55,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697230369] [2023-12-16 18:01:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:55,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:55,583 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) [2023-12-16 18:01:55,612 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 [2023-12-16 18:01:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:55,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:01:55,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:01:55,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:01:55,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697230369] [2023-12-16 18:01:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697230369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:55,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:55,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 18:01:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344761943] [2023-12-16 18:01:55,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:55,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:01:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:01:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:01:55,743 INFO L87 Difference]: Start difference. First operand 553 states and 736 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:55,795 INFO L93 Difference]: Finished difference Result 1549 states and 2049 transitions. [2023-12-16 18:01:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:01:55,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-16 18:01:55,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:55,798 INFO L225 Difference]: With dead ends: 1549 [2023-12-16 18:01:55,798 INFO L226 Difference]: Without dead ends: 1043 [2023-12-16 18:01:55,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:01:55,800 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 70 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:55,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 212 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-12-16 18:01:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1031. [2023-12-16 18:01:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.2475728155339805) internal successors, (1285), 1030 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1285 transitions. [2023-12-16 18:01:55,832 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1285 transitions. Word has length 59 [2023-12-16 18:01:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:55,832 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1285 transitions. [2023-12-16 18:01:55,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1285 transitions. [2023-12-16 18:01:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 18:01:55,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:55,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:55,839 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 [2023-12-16 18:01:56,037 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 [2023-12-16 18:01:56,038 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:56,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -956462522, now seen corresponding path program 1 times [2023-12-16 18:01:56,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:56,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426985699] [2023-12-16 18:01:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:56,039 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 [2023-12-16 18:01:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:56,040 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) [2023-12-16 18:01:56,066 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 [2023-12-16 18:01:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:56,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:01:56,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 29 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:56,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 29 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:57,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426985699] [2023-12-16 18:01:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426985699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:57,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:01:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523869930] [2023-12-16 18:01:57,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:01:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:01:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:01:57,429 INFO L87 Difference]: Start difference. First operand 1031 states and 1285 transitions. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:01,780 INFO L93 Difference]: Finished difference Result 2173 states and 2707 transitions. [2023-12-16 18:02:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-16 18:02:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-16 18:02:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:01,790 INFO L225 Difference]: With dead ends: 2173 [2023-12-16 18:02:01,790 INFO L226 Difference]: Without dead ends: 1737 [2023-12-16 18:02:01,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1033, Invalid=5129, Unknown=0, NotChecked=0, Total=6162 [2023-12-16 18:02:01,792 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 654 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:01,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1689 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 18:02:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2023-12-16 18:02:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 751. [2023-12-16 18:02:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.248) internal successors, (936), 750 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) [2023-12-16 18:02:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 936 transitions. [2023-12-16 18:02:01,836 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 936 transitions. Word has length 94 [2023-12-16 18:02:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:01,836 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 936 transitions. [2023-12-16 18:02:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 936 transitions. [2023-12-16 18:02:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 18:02:01,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:01,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:01,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:02,052 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 [2023-12-16 18:02:02,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash -947820372, now seen corresponding path program 1 times [2023-12-16 18:02:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518619747] [2023-12-16 18:02:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:02,053 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 [2023-12-16 18:02:02,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:02,054 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) [2023-12-16 18:02:02,067 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 [2023-12-16 18:02:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:02,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:02:02,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:02,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:03,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518619747] [2023-12-16 18:02:03,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518619747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:03,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:03,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:02:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212772490] [2023-12-16 18:02:03,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:03,153 INFO L87 Difference]: Start difference. First operand 751 states and 936 transitions. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:04,269 INFO L93 Difference]: Finished difference Result 1343 states and 1692 transitions. [2023-12-16 18:02:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 18:02:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-16 18:02:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:04,271 INFO L225 Difference]: With dead ends: 1343 [2023-12-16 18:02:04,271 INFO L226 Difference]: Without dead ends: 753 [2023-12-16 18:02:04,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=378, Invalid=1428, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 18:02:04,272 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 385 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:04,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 567 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-16 18:02:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2023-12-16 18:02:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.2306666666666666) internal successors, (923), 750 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) [2023-12-16 18:02:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 923 transitions. [2023-12-16 18:02:04,302 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 923 transitions. Word has length 95 [2023-12-16 18:02:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:04,302 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 923 transitions. [2023-12-16 18:02:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 923 transitions. [2023-12-16 18:02:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 18:02:04,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:04,303 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:04,310 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 [2023-12-16 18:02:04,505 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 [2023-12-16 18:02:04,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:04,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 281074604, now seen corresponding path program 1 times [2023-12-16 18:02:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954067544] [2023-12-16 18:02:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:04,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:04,508 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) [2023-12-16 18:02:04,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 18:02:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:04,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:02:04,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 21 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:05,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 21 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:05,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954067544] [2023-12-16 18:02:05,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954067544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:05,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:05,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:02:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118131296] [2023-12-16 18:02:05,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:05,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:05,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:05,754 INFO L87 Difference]: Start difference. First operand 751 states and 923 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:09,644 INFO L93 Difference]: Finished difference Result 1827 states and 2232 transitions. [2023-12-16 18:02:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-16 18:02:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-16 18:02:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:09,647 INFO L225 Difference]: With dead ends: 1827 [2023-12-16 18:02:09,647 INFO L226 Difference]: Without dead ends: 1579 [2023-12-16 18:02:09,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 18:02:09,649 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 549 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:09,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1684 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 18:02:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-16 18:02:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1361. [2023-12-16 18:02:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 1.2117647058823529) internal successors, (1648), 1360 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1648 transitions. [2023-12-16 18:02:09,714 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1648 transitions. Word has length 95 [2023-12-16 18:02:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:09,714 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1648 transitions. [2023-12-16 18:02:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1648 transitions. [2023-12-16 18:02:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-16 18:02:09,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:09,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:09,717 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 [2023-12-16 18:02:09,917 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 [2023-12-16 18:02:09,917 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:09,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 652100758, now seen corresponding path program 1 times [2023-12-16 18:02:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028550401] [2023-12-16 18:02:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:09,918 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 [2023-12-16 18:02:09,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:09,919 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) [2023-12-16 18:02:09,920 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 (20)] Waiting until timeout for monitored process [2023-12-16 18:02:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:09,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:02:09,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:10,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:11,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028550401] [2023-12-16 18:02:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028550401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:11,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:02:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401428224] [2023-12-16 18:02:11,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:11,293 INFO L87 Difference]: Start difference. First operand 1361 states and 1648 transitions. Second operand has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 26 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:13,083 INFO L93 Difference]: Finished difference Result 2787 states and 3430 transitions. [2023-12-16 18:02:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 18:02:13,084 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 26 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-16 18:02:13,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:13,088 INFO L225 Difference]: With dead ends: 2787 [2023-12-16 18:02:13,088 INFO L226 Difference]: Without dead ends: 2023 [2023-12-16 18:02:13,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=306, Invalid=1950, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 18:02:13,090 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 391 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1374 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:02:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2023-12-16 18:02:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1884. [2023-12-16 18:02:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 1.2097716409984067) internal successors, (2278), 1883 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2278 transitions. [2023-12-16 18:02:13,202 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2278 transitions. Word has length 96 [2023-12-16 18:02:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:13,202 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2278 transitions. [2023-12-16 18:02:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 26 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2278 transitions. [2023-12-16 18:02:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 18:02:13,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:13,203 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:13,220 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 [2023-12-16 18:02:13,420 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 [2023-12-16 18:02:13,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:13,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash -951482833, now seen corresponding path program 2 times [2023-12-16 18:02:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369263070] [2023-12-16 18:02:13,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:02:13,422 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 [2023-12-16 18:02:13,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:13,423 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) [2023-12-16 18:02:13,424 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 [2023-12-16 18:02:13,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:02:13,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:02:13,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:13,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-16 18:02:13,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:13,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:13,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369263070] [2023-12-16 18:02:13,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369263070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:13,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:13,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436454993] [2023-12-16 18:02:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:13,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:13,788 INFO L87 Difference]: Start difference. First operand 1884 states and 2278 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:13,944 INFO L93 Difference]: Finished difference Result 2783 states and 3411 transitions. [2023-12-16 18:02:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:13,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-16 18:02:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:13,948 INFO L225 Difference]: With dead ends: 2783 [2023-12-16 18:02:13,948 INFO L226 Difference]: Without dead ends: 2404 [2023-12-16 18:02:13,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:13,949 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 94 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:13,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 287 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:02:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-12-16 18:02:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2326. [2023-12-16 18:02:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 1.2004301075268817) internal successors, (2791), 2325 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 2791 transitions. [2023-12-16 18:02:14,050 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 2791 transitions. Word has length 134 [2023-12-16 18:02:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 2791 transitions. [2023-12-16 18:02:14,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 2791 transitions. [2023-12-16 18:02:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 18:02:14,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:14,052 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:14,057 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 [2023-12-16 18:02:14,254 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 [2023-12-16 18:02:14,255 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -62589741, now seen corresponding path program 1 times [2023-12-16 18:02:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797978084] [2023-12-16 18:02:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:14,255 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 [2023-12-16 18:02:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:14,256 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) [2023-12-16 18:02:14,260 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 [2023-12-16 18:02:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:14,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 18:02:14,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 22 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:15,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 22 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:16,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797978084] [2023-12-16 18:02:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797978084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:16,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-16 18:02:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787294453] [2023-12-16 18:02:16,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 18:02:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 18:02:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 18:02:16,075 INFO L87 Difference]: Start difference. First operand 2326 states and 2791 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:19,906 INFO L93 Difference]: Finished difference Result 3510 states and 4247 transitions. [2023-12-16 18:02:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 18:02:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-16 18:02:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:19,912 INFO L225 Difference]: With dead ends: 3510 [2023-12-16 18:02:19,912 INFO L226 Difference]: Without dead ends: 2380 [2023-12-16 18:02:19,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1355, Invalid=6301, Unknown=0, NotChecked=0, Total=7656 [2023-12-16 18:02:19,915 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 975 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:19,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 961 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:02:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-12-16 18:02:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2326. [2023-12-16 18:02:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 1.1944086021505376) internal successors, (2777), 2325 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 2777 transitions. [2023-12-16 18:02:20,065 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 2777 transitions. Word has length 134 [2023-12-16 18:02:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:20,065 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 2777 transitions. [2023-12-16 18:02:20,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 2777 transitions. [2023-12-16 18:02:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:02:20,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:20,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:20,071 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 [2023-12-16 18:02:20,271 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 [2023-12-16 18:02:20,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:20,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1097525875, now seen corresponding path program 2 times [2023-12-16 18:02:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936576398] [2023-12-16 18:02:20,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:02:20,272 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 [2023-12-16 18:02:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:20,273 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) [2023-12-16 18:02:20,284 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 [2023-12-16 18:02:20,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:02:20,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:02:20,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:20,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-16 18:02:20,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:20,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:20,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936576398] [2023-12-16 18:02:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936576398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:20,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946108628] [2023-12-16 18:02:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:20,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:20,627 INFO L87 Difference]: Start difference. First operand 2326 states and 2777 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2023-12-16 18:02:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:20,782 INFO L93 Difference]: Finished difference Result 2886 states and 3494 transitions. [2023-12-16 18:02:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 135 [2023-12-16 18:02:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:20,788 INFO L225 Difference]: With dead ends: 2886 [2023-12-16 18:02:20,789 INFO L226 Difference]: Without dead ends: 2138 [2023-12-16 18:02:20,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:20,790 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 105 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:20,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 229 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2023-12-16 18:02:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2060. [2023-12-16 18:02:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 1.1796988829528898) internal successors, (2429), 2059 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2429 transitions. [2023-12-16 18:02:20,896 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2429 transitions. Word has length 135 [2023-12-16 18:02:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:20,896 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2429 transitions. [2023-12-16 18:02:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2023-12-16 18:02:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2429 transitions. [2023-12-16 18:02:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:02:20,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:20,898 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:20,900 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 [2023-12-16 18:02:21,100 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 [2023-12-16 18:02:21,100 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:21,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1056853773, now seen corresponding path program 1 times [2023-12-16 18:02:21,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:21,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427528780] [2023-12-16 18:02:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:21,101 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 [2023-12-16 18:02:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:21,103 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) [2023-12-16 18:02:21,106 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 [2023-12-16 18:02:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:21,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:21,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-16 18:02:21,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:21,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427528780] [2023-12-16 18:02:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427528780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:21,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255159528] [2023-12-16 18:02:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:21,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:21,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:21,505 INFO L87 Difference]: Start difference. First operand 2060 states and 2429 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:21,667 INFO L93 Difference]: Finished difference Result 2656 states and 3189 transitions. [2023-12-16 18:02:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:02:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:21,672 INFO L225 Difference]: With dead ends: 2656 [2023-12-16 18:02:21,672 INFO L226 Difference]: Without dead ends: 2342 [2023-12-16 18:02:21,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:21,673 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 95 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:21,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 232 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-12-16 18:02:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2264. [2023-12-16 18:02:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2263 states have (on average 1.1767565178965975) internal successors, (2663), 2263 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 2663 transitions. [2023-12-16 18:02:21,793 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 2663 transitions. Word has length 135 [2023-12-16 18:02:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:21,794 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 2663 transitions. [2023-12-16 18:02:21,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 2663 transitions. [2023-12-16 18:02:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 18:02:21,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:21,795 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:21,800 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 [2023-12-16 18:02:21,998 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 [2023-12-16 18:02:21,998 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:21,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -827134843, now seen corresponding path program 1 times [2023-12-16 18:02:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:21,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423181316] [2023-12-16 18:02:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:21,999 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 [2023-12-16 18:02:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:22,000 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) [2023-12-16 18:02:22,000 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 [2023-12-16 18:02:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:22,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 18:02:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:23,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:23,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:23,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423181316] [2023-12-16 18:02:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423181316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:23,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-16 18:02:23,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658249433] [2023-12-16 18:02:23,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 18:02:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 18:02:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 18:02:23,714 INFO L87 Difference]: Start difference. First operand 2264 states and 2663 transitions. Second operand has 34 states, 34 states have (on average 7.470588235294118) internal successors, (254), 34 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:48,818 INFO L93 Difference]: Finished difference Result 12847 states and 15355 transitions. [2023-12-16 18:02:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2023-12-16 18:02:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.470588235294118) internal successors, (254), 34 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-16 18:02:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:48,839 INFO L225 Difference]: With dead ends: 12847 [2023-12-16 18:02:48,839 INFO L226 Difference]: Without dead ends: 12183 [2023-12-16 18:02:48,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33253 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=8340, Invalid=75470, Unknown=0, NotChecked=0, Total=83810 [2023-12-16 18:02:48,853 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1688 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 4204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:48,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 4745 Invalid, 4204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-16 18:02:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12183 states. [2023-12-16 18:02:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12183 to 11283. [2023-12-16 18:02:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11283 states, 11282 states have (on average 1.1890622230101047) internal successors, (13415), 11282 states have internal predecessors, (13415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 13415 transitions. [2023-12-16 18:02:49,446 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 13415 transitions. Word has length 136 [2023-12-16 18:02:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 11283 states and 13415 transitions. [2023-12-16 18:02:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.470588235294118) internal successors, (254), 34 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 13415 transitions. [2023-12-16 18:02:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 18:02:49,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:49,451 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:49,454 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 [2023-12-16 18:02:49,654 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 [2023-12-16 18:02:49,654 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -944659763, now seen corresponding path program 1 times [2023-12-16 18:02:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:49,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612531305] [2023-12-16 18:02:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:49,655 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 [2023-12-16 18:02:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:49,656 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) [2023-12-16 18:02:49,657 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 [2023-12-16 18:02:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:49,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 18:02:49,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 134 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 18:02:51,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 134 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 18:02:52,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612531305] [2023-12-16 18:02:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612531305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:52,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-16 18:02:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39367438] [2023-12-16 18:02:52,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 18:02:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 18:02:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 18:02:52,145 INFO L87 Difference]: Start difference. First operand 11283 states and 13415 transitions. Second operand has 34 states, 34 states have (on average 5.647058823529412) internal successors, (192), 34 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:02:57,707 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 (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:02:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 18:02:57,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=637, Invalid=3145, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 18:02:57,711 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 306 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:57,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 411 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 18:02:57,712 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:02:57,717 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 (26)] Ended with exit code 0 [2023-12-16 18:02:57,717 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 [2023-12-16 18:02:57,912 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 [2023-12-16 18:02:57,913 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (11283states) and FLOYD_HOARE automaton (currently 35 states, 34 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 1quantifier alternations) to 62 known predicates. [2023-12-16 18:02:57,916 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:57,918 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:02:57,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:02:57 BoogieIcfgContainer [2023-12-16 18:02:57,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:02:57,919 INFO L158 Benchmark]: Toolchain (without parser) took 71804.96ms. Allocated memory was 237.0MB in the beginning and 714.1MB in the end (delta: 477.1MB). Free memory was 195.3MB in the beginning and 247.8MB in the end (delta: -52.4MB). Peak memory consumption was 425.9MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,919 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 135.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:02:57,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.79ms. Allocated memory is still 237.0MB. Free memory was 195.3MB in the beginning and 181.3MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.99ms. Allocated memory is still 237.0MB. Free memory was 181.3MB in the beginning and 179.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,920 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 237.0MB. Free memory was 179.2MB in the beginning and 176.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,920 INFO L158 Benchmark]: RCFGBuilder took 496.60ms. Allocated memory is still 237.0MB. Free memory was 176.6MB in the beginning and 154.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,920 INFO L158 Benchmark]: TraceAbstraction took 70981.67ms. Allocated memory was 237.0MB in the beginning and 714.1MB in the end (delta: 477.1MB). Free memory was 154.1MB in the beginning and 247.8MB in the end (delta: -93.7MB). Peak memory consumption was 385.0MB. Max. memory is 8.0GB. [2023-12-16 18:02:57,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 135.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.79ms. Allocated memory is still 237.0MB. Free memory was 195.3MB in the beginning and 181.3MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.99ms. Allocated memory is still 237.0MB. Free memory was 181.3MB in the beginning and 179.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 237.0MB. Free memory was 179.2MB in the beginning and 176.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 496.60ms. Allocated memory is still 237.0MB. Free memory was 176.6MB in the beginning and 154.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 70981.67ms. Allocated memory was 237.0MB in the beginning and 714.1MB in the end (delta: 477.1MB). Free memory was 154.1MB in the beginning and 247.8MB in the end (delta: -93.7MB). Peak memory consumption was 385.0MB. 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: 287]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 287). Cancelled while NwaCegarLoop was constructing difference of abstraction (11283states) and FLOYD_HOARE automaton (currently 35 states, 34 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 1quantifier alternations) to 62 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.9s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 48.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6823 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6823 mSDsluCounter, 15324 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13116 mSDsCounter, 277 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13096 IncrementalHoareTripleChecker+Invalid, 13373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 277 mSolverCounterUnsat, 2208 mSDtfsCounter, 13096 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3284 GetRequests, 2514 SyntacticMatches, 0 SemanticMatches, 769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39281 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11283occurred in iteration=24, InterpolantAutomatonStates: 573, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 3065 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 1806 NumberOfCodeBlocks, 1622 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2777 ConstructedInterpolants, 705 QuantifiedInterpolants, 32610 SizeOfPredicates, 105 NumberOfNonLiveVariables, 3458 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 36 InterpolantComputations, 14 PerfectInterpolantSequences, 1411/2775 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