/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:01:18,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:01:18,576 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 18:01:18,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:01:18,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:01:18,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:01:18,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:01:18,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:01:18,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:01:18,603 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:01:18,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:01:18,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:01:18,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:01:18,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:01:18,604 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:01:18,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:01:18,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:01:18,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:01:18,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:01:18,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:01:18,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:01:18,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:01:18,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:01:18,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:01:18,611 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:01:18,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:01:18,612 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:01:18,612 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:01:18,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:01:18,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:01:18,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:01:18,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:01:18,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:01:18,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:01:18,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:01:18,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:01:18,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:01:18,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:01:18,614 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:01:18,614 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:01:18,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:01:18,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:01:18,615 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:01:18,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:01:18,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:01:18,615 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:01:18,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:01:18,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:01:18,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:01:18,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:01:18,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:01:18,828 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:01:18,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-12-16 18:01:19,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:01:20,034 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:01:20,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-12-16 18:01:20,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1813465/18b0ace9cc3a47ad963a967fc8ea637c/FLAG94205d5a9 [2023-12-16 18:01:20,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1813465/18b0ace9cc3a47ad963a967fc8ea637c [2023-12-16 18:01:20,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:01:20,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:01:20,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:01:20,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:01:20,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:01:20,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c1baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20, skipping insertion in model container [2023-12-16 18:01:20,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:01:20,691 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2023-12-16 18:01:20,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:01:20,719 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:01:20,764 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2023-12-16 18:01:20,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:01:20,806 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:01:20,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20 WrapperNode [2023-12-16 18:01:20,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:01:20,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:01:20,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:01:20,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:01:20,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,872 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 423 [2023-12-16 18:01:20,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:01:20,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:01:20,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:01:20,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:01:20,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,909 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 18:01:20,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:01:20,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:01:20,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:01:20,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:01:20,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (1/1) ... [2023-12-16 18:01:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:01:20,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:01:20,975 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 18:01:21,005 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 18:01:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:01:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:01:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:01:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:01:21,113 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:01:21,118 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:01:21,566 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:01:21,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:01:21,591 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:01:21,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:21 BoogieIcfgContainer [2023-12-16 18:01:21,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:01:21,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:01:21,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:01:21,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:01:21,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:01:20" (1/3) ... [2023-12-16 18:01:21,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:21, skipping insertion in model container [2023-12-16 18:01:21,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:20" (2/3) ... [2023-12-16 18:01:21,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:21, skipping insertion in model container [2023-12-16 18:01:21,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:21" (3/3) ... [2023-12-16 18:01:21,598 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-12-16 18:01:21,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:01:21,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:01:21,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:01:21,657 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;@3adad65a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:01:21,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:01:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7982456140350878) internal successors, (205), 115 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 18:01:21,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:21,668 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 18:01:21,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:21,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1951872268, now seen corresponding path program 1 times [2023-12-16 18:01:21,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:21,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915147211] [2023-12-16 18:01:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:21,685 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 18:01:21,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:21,689 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 18:01:21,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 18:01:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:21,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:01:21,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:21,865 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 18:01:21,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:21,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915147211] [2023-12-16 18:01:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915147211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:21,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:21,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:01:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137421729] [2023-12-16 18:01:21,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:01:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:01:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:21,890 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7982456140350878) internal successors, (205), 115 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 18:01:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:21,982 INFO L93 Difference]: Finished difference Result 190 states and 327 transitions. [2023-12-16 18:01:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:01:21,984 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 18:01:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:21,991 INFO L225 Difference]: With dead ends: 190 [2023-12-16 18:01:21,991 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 18:01:21,994 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 18:01:21,996 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:21,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 550 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:01:22,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 18:01:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-16 18:01:22,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.407079646017699) internal successors, (159), 113 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 18:01:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2023-12-16 18:01:22,033 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 34 [2023-12-16 18:01:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:22,034 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2023-12-16 18:01:22,034 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 18:01:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2023-12-16 18:01:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 18:01:22,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:22,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:22,056 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 18:01:22,256 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 18:01:22,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:22,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1418311254, now seen corresponding path program 1 times [2023-12-16 18:01:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987744400] [2023-12-16 18:01:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:22,259 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 18:01:22,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:22,329 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 18:01:22,330 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 18:01:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:22,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:22,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:22,474 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 18:01:22,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:22,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987744400] [2023-12-16 18:01:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987744400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068519197] [2023-12-16 18:01:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:22,477 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:22,496 INFO L93 Difference]: Finished difference Result 244 states and 373 transitions. [2023-12-16 18:01:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 18:01:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:22,498 INFO L225 Difference]: With dead ends: 244 [2023-12-16 18:01:22,498 INFO L226 Difference]: Without dead ends: 175 [2023-12-16 18:01:22,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:22,499 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 90 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:22,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-16 18:01:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-12-16 18:01:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.494186046511628) internal successors, (257), 172 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 18:01:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2023-12-16 18:01:22,509 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 74 [2023-12-16 18:01:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:22,510 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2023-12-16 18:01:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2023-12-16 18:01:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 18:01:22,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:22,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:22,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 18:01:22,713 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 18:01:22,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:22,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:22,714 INFO L85 PathProgramCache]: Analyzing trace with hash 209399157, now seen corresponding path program 1 times [2023-12-16 18:01:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877691596] [2023-12-16 18:01:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:22,715 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 18:01:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:22,717 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 18:01:22,735 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 18:01:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:22,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 18:01:22,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:23,812 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 18:01:23,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:23,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877691596] [2023-12-16 18:01:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877691596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:01:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508934175] [2023-12-16 18:01:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:01:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:01:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:01:23,824 INFO L87 Difference]: Start difference. First operand 173 states and 257 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:23,963 INFO L93 Difference]: Finished difference Result 1069 states and 1741 transitions. [2023-12-16 18:01:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 18:01:23,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 18:01:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:23,971 INFO L225 Difference]: With dead ends: 1069 [2023-12-16 18:01:23,971 INFO L226 Difference]: Without dead ends: 941 [2023-12-16 18:01:23,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:01:23,975 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 907 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:23,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 968 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:01:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-16 18:01:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 299. [2023-12-16 18:01:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.5570469798657718) internal successors, (464), 298 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 18:01:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 464 transitions. [2023-12-16 18:01:24,038 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 464 transitions. Word has length 74 [2023-12-16 18:01:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:24,039 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 464 transitions. [2023-12-16 18:01:24,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 464 transitions. [2023-12-16 18:01:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 18:01:24,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:24,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:24,060 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 (4)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:24,244 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 18:01:24,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:24,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2111620221, now seen corresponding path program 1 times [2023-12-16 18:01:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:24,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954292436] [2023-12-16 18:01:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:24,245 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 18:01:24,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:24,247 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 18:01:24,264 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 (5)] Waiting until timeout for monitored process [2023-12-16 18:01:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:24,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:01:24,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:24,358 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 18:01:24,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:24,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:24,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954292436] [2023-12-16 18:01:24,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954292436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:24,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:24,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:01:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51099347] [2023-12-16 18:01:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:01:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:01:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:24,363 INFO L87 Difference]: Start difference. First operand 299 states and 464 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:24,384 INFO L93 Difference]: Finished difference Result 313 states and 481 transitions. [2023-12-16 18:01:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:01:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 18:01:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:24,387 INFO L225 Difference]: With dead ends: 313 [2023-12-16 18:01:24,387 INFO L226 Difference]: Without dead ends: 311 [2023-12-16 18:01:24,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:01:24,391 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:24,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 458 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-16 18:01:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2023-12-16 18:01:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.542483660130719) internal successors, (472), 306 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 472 transitions. [2023-12-16 18:01:24,407 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 472 transitions. Word has length 75 [2023-12-16 18:01:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:24,408 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 472 transitions. [2023-12-16 18:01:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 472 transitions. [2023-12-16 18:01:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 18:01:24,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:24,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:24,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 18:01:24,613 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 18:01:24,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:24,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1034715555, now seen corresponding path program 1 times [2023-12-16 18:01:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402151366] [2023-12-16 18:01:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:24,615 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 18:01:24,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:24,617 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 18:01:24,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 18:01:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:24,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:24,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:24,791 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 18:01:24,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:24,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:24,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402151366] [2023-12-16 18:01:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402151366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:24,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441189000] [2023-12-16 18:01:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:24,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:24,793 INFO L87 Difference]: Start difference. First operand 307 states and 472 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:24,813 INFO L93 Difference]: Finished difference Result 803 states and 1278 transitions. [2023-12-16 18:01:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 18:01:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:24,816 INFO L225 Difference]: With dead ends: 803 [2023-12-16 18:01:24,816 INFO L226 Difference]: Without dead ends: 541 [2023-12-16 18:01:24,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:24,818 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 75 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:24,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 266 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-16 18:01:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-12-16 18:01:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5724907063197027) internal successors, (846), 538 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 18:01:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 846 transitions. [2023-12-16 18:01:24,829 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 846 transitions. Word has length 76 [2023-12-16 18:01:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 846 transitions. [2023-12-16 18:01:24,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 846 transitions. [2023-12-16 18:01:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 18:01:24,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:24,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:24,837 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 (6)] Ended with exit code 0 [2023-12-16 18:01:25,037 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 18:01:25,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:25,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1680632190, now seen corresponding path program 1 times [2023-12-16 18:01:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343573315] [2023-12-16 18:01:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:25,039 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 18:01:25,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:25,041 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 18:01:25,043 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 18:01:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:25,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:25,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:25,159 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 18:01:25,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:25,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343573315] [2023-12-16 18:01:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343573315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:25,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:25,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892806908] [2023-12-16 18:01:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:25,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:25,161 INFO L87 Difference]: Start difference. First operand 539 states and 846 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:25,179 INFO L93 Difference]: Finished difference Result 1033 states and 1647 transitions. [2023-12-16 18:01:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 18:01:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:25,181 INFO L225 Difference]: With dead ends: 1033 [2023-12-16 18:01:25,181 INFO L226 Difference]: Without dead ends: 771 [2023-12-16 18:01:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:25,182 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 102 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 358 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-12-16 18:01:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 769. [2023-12-16 18:01:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.5807291666666667) internal successors, (1214), 768 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states 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 18:01:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1214 transitions. [2023-12-16 18:01:25,197 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1214 transitions. Word has length 76 [2023-12-16 18:01:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:25,197 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 1214 transitions. [2023-12-16 18:01:25,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1214 transitions. [2023-12-16 18:01:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:01:25,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:25,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:25,200 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 18:01:25,400 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 18:01:25,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:25,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2045463766, now seen corresponding path program 1 times [2023-12-16 18:01:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950808619] [2023-12-16 18:01:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:25,401 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 18:01:25,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:25,403 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 18:01:25,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 18:01:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:25,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:25,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:25,550 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 18:01:25,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:25,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:25,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950808619] [2023-12-16 18:01:25,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950808619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:25,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:25,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246303087] [2023-12-16 18:01:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:25,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:25,552 INFO L87 Difference]: Start difference. First operand 769 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:25,598 INFO L93 Difference]: Finished difference Result 2117 states and 3380 transitions. [2023-12-16 18:01:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:01:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:25,603 INFO L225 Difference]: With dead ends: 2117 [2023-12-16 18:01:25,603 INFO L226 Difference]: Without dead ends: 1395 [2023-12-16 18:01:25,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:25,620 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 82 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 316 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2023-12-16 18:01:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1393. [2023-12-16 18:01:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 1.5804597701149425) internal successors, (2200), 1392 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 18:01:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2200 transitions. [2023-12-16 18:01:25,650 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2200 transitions. Word has length 77 [2023-12-16 18:01:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:25,650 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 2200 transitions. [2023-12-16 18:01:25,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2200 transitions. [2023-12-16 18:01:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:01:25,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:25,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:25,673 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 (8)] Ended with exit code 0 [2023-12-16 18:01:25,854 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 18:01:25,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:25,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1775774794, now seen corresponding path program 1 times [2023-12-16 18:01:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:25,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661425350] [2023-12-16 18:01:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:25,855 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 18:01:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:25,856 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 18:01:25,888 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 18:01:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:25,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:25,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:26,002 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 18:01:26,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:26,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661425350] [2023-12-16 18:01:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661425350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345810118] [2023-12-16 18:01:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:26,005 INFO L87 Difference]: Start difference. First operand 1393 states and 2200 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:26,034 INFO L93 Difference]: Finished difference Result 3893 states and 6170 transitions. [2023-12-16 18:01:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:01:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:26,041 INFO L225 Difference]: With dead ends: 3893 [2023-12-16 18:01:26,041 INFO L226 Difference]: Without dead ends: 2547 [2023-12-16 18:01:26,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:26,043 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 86 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:26,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 329 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-12-16 18:01:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2023-12-16 18:01:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.569182389937107) internal successors, (3992), 2544 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states 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 18:01:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3992 transitions. [2023-12-16 18:01:26,085 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3992 transitions. Word has length 77 [2023-12-16 18:01:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3992 transitions. [2023-12-16 18:01:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3992 transitions. [2023-12-16 18:01:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:01:26,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:26,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:26,089 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 18:01:26,289 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 18:01:26,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:26,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1329434998, now seen corresponding path program 1 times [2023-12-16 18:01:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:26,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514593032] [2023-12-16 18:01:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:26,290 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 18:01:26,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:26,291 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 18:01:26,320 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 18:01:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:26,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:26,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:26,386 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 18:01:26,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:26,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514593032] [2023-12-16 18:01:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514593032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:26,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283283906] [2023-12-16 18:01:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:26,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:26,388 INFO L87 Difference]: Start difference. First operand 2545 states and 3992 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:26,434 INFO L93 Difference]: Finished difference Result 7157 states and 11210 transitions. [2023-12-16 18:01:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:01:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:26,445 INFO L225 Difference]: With dead ends: 7157 [2023-12-16 18:01:26,445 INFO L226 Difference]: Without dead ends: 4659 [2023-12-16 18:01:26,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:26,451 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 94 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:26,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2023-12-16 18:01:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4657. [2023-12-16 18:01:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4656 states have (on average 1.5498281786941581) internal successors, (7216), 4656 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states 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 18:01:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 7216 transitions. [2023-12-16 18:01:26,574 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 7216 transitions. Word has length 77 [2023-12-16 18:01:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:26,574 INFO L495 AbstractCegarLoop]: Abstraction has 4657 states and 7216 transitions. [2023-12-16 18:01:26,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 7216 transitions. [2023-12-16 18:01:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:01:26,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:26,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:26,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-16 18:01:26,777 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 18:01:26,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:26,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -965134422, now seen corresponding path program 1 times [2023-12-16 18:01:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890954047] [2023-12-16 18:01:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:26,782 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 18:01:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:26,805 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 18:01:26,806 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 (11)] Waiting until timeout for monitored process [2023-12-16 18:01:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:26,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:26,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:26,943 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 18:01:26,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:26,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:26,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890954047] [2023-12-16 18:01:26,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890954047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:26,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:26,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466178638] [2023-12-16 18:01:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:26,961 INFO L87 Difference]: Start difference. First operand 4657 states and 7216 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:27,039 INFO L93 Difference]: Finished difference Result 13109 states and 20210 transitions. [2023-12-16 18:01:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:01:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:27,063 INFO L225 Difference]: With dead ends: 13109 [2023-12-16 18:01:27,063 INFO L226 Difference]: Without dead ends: 8499 [2023-12-16 18:01:27,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:27,070 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 98 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:27,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 358 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2023-12-16 18:01:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8497. [2023-12-16 18:01:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8496 states have (on average 1.5235404896421845) internal successors, (12944), 8496 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states 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 18:01:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 12944 transitions. [2023-12-16 18:01:27,316 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 12944 transitions. Word has length 77 [2023-12-16 18:01:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:27,316 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 12944 transitions. [2023-12-16 18:01:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 12944 transitions. [2023-12-16 18:01:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 18:01:27,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:27,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:27,324 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 18:01:27,522 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 18:01:27,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:27,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash -284094702, now seen corresponding path program 1 times [2023-12-16 18:01:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815976004] [2023-12-16 18:01:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:27,523 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 18:01:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:27,524 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 18:01:27,528 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 18:01:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:27,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:01:27,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:28,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:28,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815976004] [2023-12-16 18:01:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815976004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:28,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:01:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551284287] [2023-12-16 18:01:28,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:28,473 INFO L87 Difference]: Start difference. First operand 8497 states and 12944 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:29,435 INFO L93 Difference]: Finished difference Result 27383 states and 41235 transitions. [2023-12-16 18:01:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 18:01:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-16 18:01:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:29,474 INFO L225 Difference]: With dead ends: 27383 [2023-12-16 18:01:29,474 INFO L226 Difference]: Without dead ends: 21621 [2023-12-16 18:01:29,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-12-16 18:01:29,486 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1451 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:29,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 841 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:01:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21621 states. [2023-12-16 18:01:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21621 to 17681. [2023-12-16 18:01:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 17680 states have (on average 1.514027149321267) internal successors, (26768), 17680 states have internal predecessors, (26768), 0 states have call successors, (0), 0 states 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 18:01:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 26768 transitions. [2023-12-16 18:01:29,946 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 26768 transitions. Word has length 106 [2023-12-16 18:01:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:29,946 INFO L495 AbstractCegarLoop]: Abstraction has 17681 states and 26768 transitions. [2023-12-16 18:01:29,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 26768 transitions. [2023-12-16 18:01:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 18:01:29,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:29,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:29,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:30,156 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 18:01:30,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:30,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash -583048489, now seen corresponding path program 1 times [2023-12-16 18:01:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:30,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086112977] [2023-12-16 18:01:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:30,157 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 18:01:30,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:30,158 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 18:01:30,180 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 18:01:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:30,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:30,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:30,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:30,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086112977] [2023-12-16 18:01:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086112977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:30,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408450610] [2023-12-16 18:01:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:30,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:30,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:30,254 INFO L87 Difference]: Start difference. First operand 17681 states and 26768 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:30,513 INFO L93 Difference]: Finished difference Result 29666 states and 45037 transitions. [2023-12-16 18:01:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 18:01:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:30,531 INFO L225 Difference]: With dead ends: 29666 [2023-12-16 18:01:30,531 INFO L226 Difference]: Without dead ends: 12032 [2023-12-16 18:01:30,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:30,545 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 80 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:30,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 355 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12032 states. [2023-12-16 18:01:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12032 to 12020. [2023-12-16 18:01:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.5095265829103919) internal successors, (18143), 12019 states have internal predecessors, (18143), 0 states have call successors, (0), 0 states 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 18:01:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 18143 transitions. [2023-12-16 18:01:30,761 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 18143 transitions. Word has length 107 [2023-12-16 18:01:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:30,762 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 18143 transitions. [2023-12-16 18:01:30,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 18143 transitions. [2023-12-16 18:01:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 18:01:30,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:30,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:30,767 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 18:01:30,967 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 18:01:30,967 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:30,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -774354070, now seen corresponding path program 1 times [2023-12-16 18:01:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:30,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300943413] [2023-12-16 18:01:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:30,968 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 18:01:30,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:30,970 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 18:01:30,976 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 18:01:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:31,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:31,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:31,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:31,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300943413] [2023-12-16 18:01:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300943413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:31,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992008241] [2023-12-16 18:01:31,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:31,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:31,125 INFO L87 Difference]: Start difference. First operand 12020 states and 18143 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:31,359 INFO L93 Difference]: Finished difference Result 35545 states and 53516 transitions. [2023-12-16 18:01:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 18:01:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:31,399 INFO L225 Difference]: With dead ends: 35545 [2023-12-16 18:01:31,399 INFO L226 Difference]: Without dead ends: 23607 [2023-12-16 18:01:31,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:31,417 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 79 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:31,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23607 states. [2023-12-16 18:01:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23607 to 23605. [2023-12-16 18:01:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23605 states, 23604 states have (on average 1.4916963226571767) internal successors, (35210), 23604 states have internal predecessors, (35210), 0 states have call successors, (0), 0 states 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 18:01:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23605 states to 23605 states and 35210 transitions. [2023-12-16 18:01:32,031 INFO L78 Accepts]: Start accepts. Automaton has 23605 states and 35210 transitions. Word has length 107 [2023-12-16 18:01:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:32,031 INFO L495 AbstractCegarLoop]: Abstraction has 23605 states and 35210 transitions. [2023-12-16 18:01:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 23605 states and 35210 transitions. [2023-12-16 18:01:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 18:01:32,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:32,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:32,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-16 18:01:32,240 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 18:01:32,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:32,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash -373668072, now seen corresponding path program 1 times [2023-12-16 18:01:32,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:32,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616631106] [2023-12-16 18:01:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:32,243 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 18:01:32,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 18:01:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:32,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:01:32,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:33,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:33,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616631106] [2023-12-16 18:01:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616631106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:33,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:01:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642803338] [2023-12-16 18:01:33,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:33,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:33,495 INFO L87 Difference]: Start difference. First operand 23605 states and 35210 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:36,008 INFO L93 Difference]: Finished difference Result 85993 states and 127480 transitions. [2023-12-16 18:01:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 18:01:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 18:01:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:36,119 INFO L225 Difference]: With dead ends: 85993 [2023-12-16 18:01:36,119 INFO L226 Difference]: Without dead ends: 62495 [2023-12-16 18:01:36,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 18:01:36,153 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1352 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:36,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2271 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 18:01:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62495 states. [2023-12-16 18:01:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62495 to 53909. [2023-12-16 18:01:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53909 states, 53908 states have (on average 1.4811901758551607) internal successors, (79848), 53908 states have internal predecessors, (79848), 0 states have call successors, (0), 0 states 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 18:01:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53909 states to 53909 states and 79848 transitions. [2023-12-16 18:01:37,913 INFO L78 Accepts]: Start accepts. Automaton has 53909 states and 79848 transitions. Word has length 107 [2023-12-16 18:01:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:37,913 INFO L495 AbstractCegarLoop]: Abstraction has 53909 states and 79848 transitions. [2023-12-16 18:01:37,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 53909 states and 79848 transitions. [2023-12-16 18:01:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 18:01:37,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:37,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:37,929 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 18:01:38,129 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 18:01:38,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:38,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1164952654, now seen corresponding path program 1 times [2023-12-16 18:01:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96447280] [2023-12-16 18:01:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:38,131 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 18:01:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:38,132 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 18:01:38,134 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 18:01:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:38,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:38,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:38,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:38,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96447280] [2023-12-16 18:01:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96447280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:38,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111882043] [2023-12-16 18:01:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:38,244 INFO L87 Difference]: Start difference. First operand 53909 states and 79848 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:38,660 INFO L93 Difference]: Finished difference Result 80809 states and 119706 transitions. [2023-12-16 18:01:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 18:01:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:38,821 INFO L225 Difference]: With dead ends: 80809 [2023-12-16 18:01:38,821 INFO L226 Difference]: Without dead ends: 27015 [2023-12-16 18:01:38,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:38,844 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 73 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:38,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 336 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27015 states. [2023-12-16 18:01:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27015 to 27013. [2023-12-16 18:01:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27013 states, 27012 states have (on average 1.4698652450762624) internal successors, (39704), 27012 states have internal predecessors, (39704), 0 states have call successors, (0), 0 states 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 18:01:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27013 states to 27013 states and 39704 transitions. [2023-12-16 18:01:39,492 INFO L78 Accepts]: Start accepts. Automaton has 27013 states and 39704 transitions. Word has length 107 [2023-12-16 18:01:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:39,493 INFO L495 AbstractCegarLoop]: Abstraction has 27013 states and 39704 transitions. [2023-12-16 18:01:39,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27013 states and 39704 transitions. [2023-12-16 18:01:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 18:01:39,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:39,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:39,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:39,700 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 18:01:39,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:39,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash 622190419, now seen corresponding path program 1 times [2023-12-16 18:01:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814076637] [2023-12-16 18:01:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:39,701 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 18:01:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:39,702 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 18:01:39,703 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 18:01:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:39,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:01:39,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:40,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:40,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814076637] [2023-12-16 18:01:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814076637] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:40,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:40,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:01:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320401559] [2023-12-16 18:01:40,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:40,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:40,687 INFO L87 Difference]: Start difference. First operand 27013 states and 39704 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:42,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:42,347 INFO L93 Difference]: Finished difference Result 101996 states and 149709 transitions. [2023-12-16 18:01:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 18:01:42,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 18:01:42,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:42,477 INFO L225 Difference]: With dead ends: 101996 [2023-12-16 18:01:42,478 INFO L226 Difference]: Without dead ends: 75098 [2023-12-16 18:01:42,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-16 18:01:42,536 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1348 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:42,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1072 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:01:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75098 states. [2023-12-16 18:01:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75098 to 61638. [2023-12-16 18:01:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61638 states, 61637 states have (on average 1.4543537161120756) internal successors, (89642), 61637 states have internal predecessors, (89642), 0 states have call successors, (0), 0 states 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 18:01:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61638 states to 61638 states and 89642 transitions. [2023-12-16 18:01:44,093 INFO L78 Accepts]: Start accepts. Automaton has 61638 states and 89642 transitions. Word has length 107 [2023-12-16 18:01:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:44,093 INFO L495 AbstractCegarLoop]: Abstraction has 61638 states and 89642 transitions. [2023-12-16 18:01:44,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 61638 states and 89642 transitions. [2023-12-16 18:01:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 18:01:44,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:44,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:44,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:44,303 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 18:01:44,304 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:44,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash -898109865, now seen corresponding path program 1 times [2023-12-16 18:01:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840096678] [2023-12-16 18:01:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:44,306 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 18:01:44,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 18:01:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:44,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:01:44,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:45,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:01:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:45,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840096678] [2023-12-16 18:01:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840096678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:01:45,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:01:45,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:01:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898385341] [2023-12-16 18:01:45,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:01:45,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:01:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:01:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:01:45,337 INFO L87 Difference]: Start difference. First operand 61638 states and 89642 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:48,173 INFO L93 Difference]: Finished difference Result 164728 states and 239347 transitions. [2023-12-16 18:01:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 18:01:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-16 18:01:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:48,321 INFO L225 Difference]: With dead ends: 164728 [2023-12-16 18:01:48,321 INFO L226 Difference]: Without dead ends: 103205 [2023-12-16 18:01:48,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-12-16 18:01:48,396 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1052 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:48,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1918 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 18:01:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103205 states. [2023-12-16 18:01:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103205 to 79877. [2023-12-16 18:01:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79877 states, 79876 states have (on average 1.4565952225950223) internal successors, (116347), 79876 states have internal predecessors, (116347), 0 states have call successors, (0), 0 states 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 18:01:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79877 states to 79877 states and 116347 transitions. [2023-12-16 18:01:50,594 INFO L78 Accepts]: Start accepts. Automaton has 79877 states and 116347 transitions. Word has length 108 [2023-12-16 18:01:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:50,595 INFO L495 AbstractCegarLoop]: Abstraction has 79877 states and 116347 transitions. [2023-12-16 18:01:50,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 79877 states and 116347 transitions. [2023-12-16 18:01:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 18:01:50,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:50,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:50,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 18:01:50,815 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 18:01:50,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:50,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash -554415191, now seen corresponding path program 1 times [2023-12-16 18:01:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:50,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460008994] [2023-12-16 18:01:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:01:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:50,818 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 18:01:50,841 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 18:01:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:50,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:50,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:50,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:50,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:50,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460008994] [2023-12-16 18:01:50,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460008994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:50,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:50,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914148692] [2023-12-16 18:01:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:50,919 INFO L87 Difference]: Start difference. First operand 79877 states and 116347 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:01:53,706 INFO L93 Difference]: Finished difference Result 236369 states and 343059 transitions. [2023-12-16 18:01:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:01:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-16 18:01:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:01:54,034 INFO L225 Difference]: With dead ends: 236369 [2023-12-16 18:01:54,034 INFO L226 Difference]: Without dead ends: 156607 [2023-12-16 18:01:54,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:54,301 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 78 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:01:54,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 310 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:01:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156607 states. [2023-12-16 18:01:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156607 to 156605. [2023-12-16 18:01:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156605 states, 156604 states have (on average 1.4360105744425429) internal successors, (224885), 156604 states have internal predecessors, (224885), 0 states have call successors, (0), 0 states 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 18:01:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156605 states to 156605 states and 224885 transitions. [2023-12-16 18:01:58,636 INFO L78 Accepts]: Start accepts. Automaton has 156605 states and 224885 transitions. Word has length 108 [2023-12-16 18:01:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:01:58,636 INFO L495 AbstractCegarLoop]: Abstraction has 156605 states and 224885 transitions. [2023-12-16 18:01:58,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:01:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 156605 states and 224885 transitions. [2023-12-16 18:01:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 18:01:58,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:01:58,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:01:58,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-16 18:01:58,849 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 18:01:58,850 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:01:58,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:01:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash 162479179, now seen corresponding path program 1 times [2023-12-16 18:01:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:01:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858753702] [2023-12-16 18:01:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:01:58,856 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 18:01:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:01:58,857 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 18:01:58,861 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 18:01:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:01:58,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:01:58,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:01:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:01:58,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:01:58,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:01:58,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858753702] [2023-12-16 18:01:58,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858753702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:01:58,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:01:58,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:01:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688998335] [2023-12-16 18:01:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:01:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:01:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:01:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:01:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:01:58,976 INFO L87 Difference]: Start difference. First operand 156605 states and 224885 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:00,810 INFO L93 Difference]: Finished difference Result 234785 states and 337127 transitions. [2023-12-16 18:02:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-16 18:02:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:00,920 INFO L225 Difference]: With dead ends: 234785 [2023-12-16 18:02:00,921 INFO L226 Difference]: Without dead ends: 78351 [2023-12-16 18:02:00,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:00,979 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 67 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:00,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 317 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78351 states. [2023-12-16 18:02:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78351 to 78349. [2023-12-16 18:02:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78349 states, 78348 states have (on average 1.4250906213304744) internal successors, (111653), 78348 states have internal predecessors, (111653), 0 states have call successors, (0), 0 states 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 18:02:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78349 states to 78349 states and 111653 transitions. [2023-12-16 18:02:03,052 INFO L78 Accepts]: Start accepts. Automaton has 78349 states and 111653 transitions. Word has length 108 [2023-12-16 18:02:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:03,052 INFO L495 AbstractCegarLoop]: Abstraction has 78349 states and 111653 transitions. [2023-12-16 18:02:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 78349 states and 111653 transitions. [2023-12-16 18:02:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 18:02:03,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:03,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:03,062 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 18:02:03,260 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 18:02:03,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:03,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1561450604, now seen corresponding path program 1 times [2023-12-16 18:02:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523299901] [2023-12-16 18:02:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:03,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:03,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:03,262 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 18:02:03,264 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 (21)] Waiting until timeout for monitored process [2023-12-16 18:02:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:03,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:02:03,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:04,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:04,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:04,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523299901] [2023-12-16 18:02:04,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523299901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:04,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:04,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:02:04,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939457115] [2023-12-16 18:02:04,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:04,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:04,409 INFO L87 Difference]: Start difference. First operand 78349 states and 111653 transitions. Second operand has 16 states, 16 states have (on average 12.25) internal successors, (196), 15 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:07,737 INFO L93 Difference]: Finished difference Result 291631 states and 416226 transitions. [2023-12-16 18:02:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 18:02:07,738 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 15 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-16 18:02:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:08,084 INFO L225 Difference]: With dead ends: 291631 [2023-12-16 18:02:08,085 INFO L226 Difference]: Without dead ends: 213453 [2023-12-16 18:02:08,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-16 18:02:08,164 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1313 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:08,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 857 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:02:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213453 states. [2023-12-16 18:02:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213453 to 182409. [2023-12-16 18:02:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182409 states, 182408 states have (on average 1.4166429103986666) internal successors, (258407), 182408 states have internal predecessors, (258407), 0 states have call successors, (0), 0 states 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 18:02:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182409 states to 182409 states and 258407 transitions. [2023-12-16 18:02:13,634 INFO L78 Accepts]: Start accepts. Automaton has 182409 states and 258407 transitions. Word has length 108 [2023-12-16 18:02:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:13,634 INFO L495 AbstractCegarLoop]: Abstraction has 182409 states and 258407 transitions. [2023-12-16 18:02:13,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 15 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 182409 states and 258407 transitions. [2023-12-16 18:02:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 18:02:13,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:13,644 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:13,649 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 18:02:13,847 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 18:02:13,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:13,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash 435088106, now seen corresponding path program 1 times [2023-12-16 18:02:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046993425] [2023-12-16 18:02:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:13,849 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 18:02:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:13,850 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 18:02:13,867 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 18:02:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:13,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:02:13,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:14,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:14,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046993425] [2023-12-16 18:02:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046993425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:14,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:14,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:02:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834071330] [2023-12-16 18:02:14,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:14,950 INFO L87 Difference]: Start difference. First operand 182409 states and 258407 transitions. Second operand has 16 states, 16 states have (on average 12.625) internal successors, (202), 15 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 18:02:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:24,145 INFO L93 Difference]: Finished difference Result 791837 states and 1126452 transitions. [2023-12-16 18:02:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 18:02:24,146 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 15 states have internal predecessors, (202), 0 states have call successors, (0), 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 109 [2023-12-16 18:02:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:25,370 INFO L225 Difference]: With dead ends: 791837 [2023-12-16 18:02:25,370 INFO L226 Difference]: Without dead ends: 609655 [2023-12-16 18:02:25,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-16 18:02:25,530 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1341 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 928 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609655 states. Received shutdown request... [2023-12-16 18:02:29,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:02:29,156 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 (22)] Ended with exit code 0 [2023-12-16 18:02:29,184 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 18:02:29,184 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 (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:02:29,351 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 18:02:29,352 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 18:02:29,356 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:29,357 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:02:29,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:02:29 BoogieIcfgContainer [2023-12-16 18:02:29,375 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:02:29,376 INFO L158 Benchmark]: Toolchain (without parser) took 68949.81ms. Allocated memory was 303.0MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 260.6MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-16 18:02:29,376 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:02:29,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.91ms. Allocated memory is still 303.0MB. Free memory was 260.6MB in the beginning and 241.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 18:02:29,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.84ms. Allocated memory is still 303.0MB. Free memory was 241.8MB in the beginning and 239.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:02:29,377 INFO L158 Benchmark]: Boogie Preprocessor took 54.79ms. Allocated memory is still 303.0MB. Free memory was 239.1MB in the beginning and 234.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 18:02:29,377 INFO L158 Benchmark]: RCFGBuilder took 663.41ms. Allocated memory is still 303.0MB. Free memory was 234.9MB in the beginning and 198.2MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 18:02:29,377 INFO L158 Benchmark]: TraceAbstraction took 67781.69ms. Allocated memory was 303.0MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 197.7MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-16 18:02:29,378 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 378.91ms. Allocated memory is still 303.0MB. Free memory was 260.6MB in the beginning and 241.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.84ms. Allocated memory is still 303.0MB. Free memory was 241.8MB in the beginning and 239.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.79ms. Allocated memory is still 303.0MB. Free memory was 239.1MB in the beginning and 234.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 663.41ms. Allocated memory is still 303.0MB. Free memory was 234.9MB in the beginning and 198.2MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 67781.69ms. Allocated memory was 303.0MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 197.7MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 3.6GB. 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: 566]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 566). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9769 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9769 mSDsluCounter, 13779 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9747 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5342 IncrementalHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 4032 mSDtfsCounter, 5342 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2601 GetRequests, 2411 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182409occurred in iteration=20, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 81038 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 1899 NumberOfCodeBlocks, 1899 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2517 ConstructedInterpolants, 473 QuantifiedInterpolants, 18194 SizeOfPredicates, 50 NumberOfNonLiveVariables, 3641 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 342/394 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