/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:38:46,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:38:46,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:38:46,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:38:46,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:38:46,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:38:46,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:38:46,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:38:46,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:38:46,121 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:38:46,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:38:46,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:38:46,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:38:46,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:38:46,122 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:38:46,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:38:46,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:38:46,123 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:38:46,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:38:46,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:38:46,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:38:46,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:38:46,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:38:46,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:38:46,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:38:46,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:38:46,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:38:46,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:38:46,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:38:46,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:38:46,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:38:46,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:38:46,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:38:46,128 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:38:46,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:38:46,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:38:46,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:38:46,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:38:46,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:38:46,305 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:38:46,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c [2023-12-24 23:38:47,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:38:47,528 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:38:47,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c [2023-12-24 23:38:47,532 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1147f2aaf/cd752a61fc4f46a48af682e934406c0d/FLAG611594ff9 [2023-12-24 23:38:47,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1147f2aaf/cd752a61fc4f46a48af682e934406c0d [2023-12-24 23:38:47,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:38:47,544 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:38:47,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:38:47,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:38:47,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:38:47,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5fd5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47, skipping insertion in model container [2023-12-24 23:38:47,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:38:47,644 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c[319,332] [2023-12-24 23:38:47,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:38:47,661 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:38:47,668 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c[319,332] [2023-12-24 23:38:47,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:38:47,680 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:38:47,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47 WrapperNode [2023-12-24 23:38:47,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:38:47,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:38:47,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:38:47,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:38:47,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,709 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-12-24 23:38:47,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:38:47,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:38:47,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:38:47,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:38:47,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,731 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 23:38:47,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:38:47,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:38:47,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:38:47,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:38:47,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (1/1) ... [2023-12-24 23:38:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:38:47,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:38:47,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 23:38:47,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 23:38:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:38:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:38:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:38:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:38:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-24 23:38:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-24 23:38:47,843 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:38:47,845 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:38:47,958 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:38:47,977 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:38:47,977 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-24 23:38:47,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:38:47 BoogieIcfgContainer [2023-12-24 23:38:47,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:38:47,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:38:47,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:38:47,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:38:47,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:38:47" (1/3) ... [2023-12-24 23:38:47,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5890d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:38:47, skipping insertion in model container [2023-12-24 23:38:47,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:38:47" (2/3) ... [2023-12-24 23:38:47,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5890d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:38:47, skipping insertion in model container [2023-12-24 23:38:47,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:38:47" (3/3) ... [2023-12-24 23:38:47,983 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_14.c [2023-12-24 23:38:47,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:38:47,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:38:48,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:38:48,047 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;@4a9329ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:38:48,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:38:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:38:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 23:38:48,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:48,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:48,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:48,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1302135437, now seen corresponding path program 1 times [2023-12-24 23:38:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:48,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109245229] [2023-12-24 23:38:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:38:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:48,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:48,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:48,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 23:38:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:38:48,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 23:38:48,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:38:48,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:38:48,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109245229] [2023-12-24 23:38:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109245229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:38:48,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:38:48,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:38:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291438359] [2023-12-24 23:38:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:38:48,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 23:38:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 23:38:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:38:48,149 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:48,172 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2023-12-24 23:38:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 23:38:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-24 23:38:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:48,178 INFO L225 Difference]: With dead ends: 25 [2023-12-24 23:38:48,178 INFO L226 Difference]: Without dead ends: 12 [2023-12-24 23:38:48,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:38:48,182 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:48,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-24 23:38:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-24 23:38:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:38:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-24 23:38:48,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2023-12-24 23:38:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:48,204 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-24 23:38:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-24 23:38:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 23:38:48,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:48,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:48,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 23:38:48,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:48,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1588426947, now seen corresponding path program 1 times [2023-12-24 23:38:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:48,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395066969] [2023-12-24 23:38:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:38:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:48,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:48,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 23:38:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:38:48,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:38:48,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:38:48,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:38:48,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:48,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395066969] [2023-12-24 23:38:48,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395066969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:38:48,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:38:48,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:38:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919970677] [2023-12-24 23:38:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:38:48,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:38:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:48,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:38:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:38:48,508 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:48,529 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2023-12-24 23:38:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:38:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-24 23:38:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:48,530 INFO L225 Difference]: With dead ends: 25 [2023-12-24 23:38:48,530 INFO L226 Difference]: Without dead ends: 14 [2023-12-24 23:38:48,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:38:48,531 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:48,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-24 23:38:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-24 23:38:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:38:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-24 23:38:48,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2023-12-24 23:38:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:48,535 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-24 23:38:48,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-24 23:38:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 23:38:48,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:48,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:48,539 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 [2023-12-24 23:38:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:48,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1495408352, now seen corresponding path program 1 times [2023-12-24 23:38:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686688584] [2023-12-24 23:38:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:38:48,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:48,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:48,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:48,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 23:38:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:38:48,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:38:48,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:38:48,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:38:48,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686688584] [2023-12-24 23:38:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686688584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:48,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:48,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 23:38:48,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88427373] [2023-12-24 23:38:48,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:48,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:38:48,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:38:48,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:38:48,815 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:48,894 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2023-12-24 23:38:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:38:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 23:38:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:48,896 INFO L225 Difference]: With dead ends: 30 [2023-12-24 23:38:48,896 INFO L226 Difference]: Without dead ends: 19 [2023-12-24 23:38:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:38:48,899 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-24 23:38:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-24 23:38:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:38:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-24 23:38:48,904 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-12-24 23:38:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:48,906 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-24 23:38:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-24 23:38:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 23:38:48,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:48,906 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:48,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 23:38:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:49,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1475316019, now seen corresponding path program 1 times [2023-12-24 23:38:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539209020] [2023-12-24 23:38:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:38:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:49,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:38:49,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:38:49,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:49,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 23:38:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:38:49,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 23:38:49,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539209020] [2023-12-24 23:38:49,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539209020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:49,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:49,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 23:38:49,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101960683] [2023-12-24 23:38:49,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:38:49,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:38:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:38:49,226 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:49,300 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-24 23:38:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:38:49,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-24 23:38:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:49,302 INFO L225 Difference]: With dead ends: 41 [2023-12-24 23:38:49,302 INFO L226 Difference]: Without dead ends: 27 [2023-12-24 23:38:49,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:38:49,303 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:49,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-24 23:38:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-24 23:38:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:38:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-12-24 23:38:49,308 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2023-12-24 23:38:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:49,308 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-12-24 23:38:49,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-12-24 23:38:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:38:49,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:49,309 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:49,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 23:38:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:49,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1763490343, now seen corresponding path program 2 times [2023-12-24 23:38:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454137293] [2023-12-24 23:38:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:38:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:49,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:49,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 23:38:49,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:38:49,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:38:49,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:38:49,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 23:38:49,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:38:49,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:49,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454137293] [2023-12-24 23:38:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454137293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:38:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:38:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:38:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070853473] [2023-12-24 23:38:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:38:49,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 23:38:49,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 23:38:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:38:49,591 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:49,618 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-12-24 23:38:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 23:38:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-24 23:38:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:49,620 INFO L225 Difference]: With dead ends: 36 [2023-12-24 23:38:49,620 INFO L226 Difference]: Without dead ends: 34 [2023-12-24 23:38:49,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:38:49,622 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:49,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-24 23:38:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-12-24 23:38:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:38:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-12-24 23:38:49,638 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2023-12-24 23:38:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:49,638 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-12-24 23:38:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-12-24 23:38:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:38:49,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:49,641 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:49,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 23:38:49,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:49,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1202716333, now seen corresponding path program 1 times [2023-12-24 23:38:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016199090] [2023-12-24 23:38:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:38:49,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:49,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:49,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 23:38:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:38:49,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 23:38:49,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:38:49,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:38:50,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016199090] [2023-12-24 23:38:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016199090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:50,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-24 23:38:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176092564] [2023-12-24 23:38:50,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 23:38:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 23:38:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:38:50,146 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:50,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:50,439 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-12-24 23:38:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 23:38:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-24 23:38:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:50,442 INFO L225 Difference]: With dead ends: 69 [2023-12-24 23:38:50,442 INFO L226 Difference]: Without dead ends: 49 [2023-12-24 23:38:50,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:38:50,443 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:50,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:38:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-24 23:38:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-24 23:38:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:38:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-12-24 23:38:50,452 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 24 [2023-12-24 23:38:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:50,452 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-12-24 23:38:50,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-12-24 23:38:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-24 23:38:50,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:50,456 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:50,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 23:38:50,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:50,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:50,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 925042581, now seen corresponding path program 2 times [2023-12-24 23:38:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960432485] [2023-12-24 23:38:50,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:38:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:50,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:50,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 23:38:50,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:38:50,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:38:50,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 23:38:50,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:38:50,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:38:51,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960432485] [2023-12-24 23:38:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960432485] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:51,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:51,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-24 23:38:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109726090] [2023-12-24 23:38:51,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 23:38:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 23:38:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2023-12-24 23:38:51,434 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:53,156 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2023-12-24 23:38:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 23:38:53,157 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-24 23:38:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:53,157 INFO L225 Difference]: With dead ends: 101 [2023-12-24 23:38:53,157 INFO L226 Difference]: Without dead ends: 81 [2023-12-24 23:38:53,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 23:38:53,159 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:53,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:38:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-24 23:38:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-24 23:38:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.08) internal successors, (81), 77 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:38:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2023-12-24 23:38:53,170 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 40 [2023-12-24 23:38:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2023-12-24 23:38:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2023-12-24 23:38:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-24 23:38:53,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:53,173 INFO L195 NwaCegarLoop]: trace histogram [32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:53,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 23:38:53,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:53,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:53,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1984735589, now seen corresponding path program 3 times [2023-12-24 23:38:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692353515] [2023-12-24 23:38:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:38:53,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:53,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 23:38:53,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:38:53,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:38:53,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:38:53,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-24 23:38:53,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-24 23:38:53,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:53,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692353515] [2023-12-24 23:38:53,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692353515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:53,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:53,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-24 23:38:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049461502] [2023-12-24 23:38:53,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 23:38:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 23:38:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-24 23:38:53,823 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:38:53,940 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2023-12-24 23:38:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 23:38:53,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-24 23:38:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:38:53,942 INFO L225 Difference]: With dead ends: 137 [2023-12-24 23:38:53,942 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 23:38:53,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:38:53,943 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:38:53,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 73 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:38:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 23:38:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2023-12-24 23:38:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 107 states have internal predecessors, (127), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:38:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2023-12-24 23:38:53,955 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 72 [2023-12-24 23:38:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:38:53,955 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2023-12-24 23:38:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:38:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2023-12-24 23:38:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-24 23:38:53,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:38:53,956 INFO L195 NwaCegarLoop]: trace histogram [32, 30, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:38:53,960 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 [2023-12-24 23:38:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:54,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:38:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:38:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash 171152673, now seen corresponding path program 4 times [2023-12-24 23:38:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:38:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171689490] [2023-12-24 23:38:54,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:38:54,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:38:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:38:54,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:38:54,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 23:38:54,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:38:54,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:38:54,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-24 23:38:54,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:38:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:38:54,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:38:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:38:56,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:38:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171689490] [2023-12-24 23:38:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171689490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:38:56,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:38:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2023-12-24 23:38:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068124674] [2023-12-24 23:38:56,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:38:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-24 23:38:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:38:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-24 23:38:56,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 23:38:56,852 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:39:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:39:10,157 INFO L93 Difference]: Finished difference Result 223 states and 296 transitions. [2023-12-24 23:39:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-24 23:39:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-24 23:39:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:39:10,161 INFO L225 Difference]: With dead ends: 223 [2023-12-24 23:39:10,161 INFO L226 Difference]: Without dead ends: 175 [2023-12-24 23:39:10,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2023-12-24 23:39:10,163 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 23:39:10,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 23:39:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-24 23:39:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-12-24 23:39:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.1301775147928994) internal successors, (191), 171 states have internal predecessors, (191), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:39:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2023-12-24 23:39:10,183 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 75 [2023-12-24 23:39:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:39:10,183 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2023-12-24 23:39:10,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:39:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2023-12-24 23:39:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 23:39:10,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:39:10,184 INFO L195 NwaCegarLoop]: trace histogram [64, 62, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:39:10,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 23:39:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:39:10,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:39:10,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:39:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1182274175, now seen corresponding path program 5 times [2023-12-24 23:39:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:39:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278315445] [2023-12-24 23:39:10,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:39:10,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:39:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:39:10,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:39:10,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 23:39:10,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 65 check-sat command(s) [2023-12-24 23:39:10,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:39:10,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-24 23:39:10,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:39:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:39:12,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:39:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-24 23:39:23,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:39:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278315445] [2023-12-24 23:39:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278315445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:39:23,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:39:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 65] total 128 [2023-12-24 23:39:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757722504] [2023-12-24 23:39:23,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:39:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-24 23:39:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:39:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-24 23:39:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4288, Invalid=12224, Unknown=0, NotChecked=0, Total=16512 [2023-12-24 23:39:23,517 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:43:14,789 INFO L93 Difference]: Finished difference Result 1160 states and 1699 transitions. [2023-12-24 23:43:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-12-24 23:43:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-24 23:43:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:43:14,797 INFO L225 Difference]: With dead ends: 1160 [2023-12-24 23:43:14,797 INFO L226 Difference]: Without dead ends: 1112 [2023-12-24 23:43:14,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7747 ImplicationChecksByTransitivity, 234.5s TimeCoverageRelationStatistics Valid=20284, Invalid=43472, Unknown=0, NotChecked=0, Total=63756 [2023-12-24 23:43:14,813 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1838 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 8571 mSolverCounterSat, 2325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 10896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2325 IncrementalHoareTripleChecker+Valid, 8571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:43:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 850 Invalid, 10896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2325 Valid, 8571 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-24 23:43:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-24 23:43:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 923. [2023-12-24 23:43:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 917 states have (on average 1.0239912758996728) internal successors, (939), 919 states have internal predecessors, (939), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:43:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 944 transitions. [2023-12-24 23:43:14,929 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 944 transitions. Word has length 139 [2023-12-24 23:43:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:43:14,930 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 944 transitions. [2023-12-24 23:43:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 944 transitions. [2023-12-24 23:43:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-24 23:43:14,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:43:14,936 INFO L195 NwaCegarLoop]: trace histogram [128, 126, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:43:14,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-24 23:43:15,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:43:15,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:43:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:43:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 995597889, now seen corresponding path program 6 times [2023-12-24 23:43:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:43:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710956501] [2023-12-24 23:43:15,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:43:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:43:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:43:15,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:43:15,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 23:43:15,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-24 23:43:15,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:43:15,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 23:43:15,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:43:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16394 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16384 trivial. 0 not checked. [2023-12-24 23:43:15,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:43:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16394 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16388 trivial. 0 not checked. [2023-12-24 23:43:15,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:43:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710956501] [2023-12-24 23:43:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710956501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:43:15,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:43:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2023-12-24 23:43:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635541899] [2023-12-24 23:43:15,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:43:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 23:43:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:43:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 23:43:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 23:43:15,882 INFO L87 Difference]: Start difference. First operand 923 states and 944 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:43:16,089 INFO L93 Difference]: Finished difference Result 947 states and 977 transitions. [2023-12-24 23:43:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 23:43:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2023-12-24 23:43:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:43:16,092 INFO L225 Difference]: With dead ends: 947 [2023-12-24 23:43:16,093 INFO L226 Difference]: Without dead ends: 945 [2023-12-24 23:43:16,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 519 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:43:16,093 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:43:16,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 227 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:43:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-24 23:43:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 923. [2023-12-24 23:43:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 917 states have (on average 1.0239912758996728) internal successors, (939), 919 states have internal predecessors, (939), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 23:43:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 944 transitions. [2023-12-24 23:43:16,176 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 944 transitions. Word has length 267 [2023-12-24 23:43:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:43:16,176 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 944 transitions. [2023-12-24 23:43:16,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 944 transitions. [2023-12-24 23:43:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-24 23:43:16,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:43:16,178 INFO L195 NwaCegarLoop]: trace histogram [128, 126, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:43:16,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 23:43:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:43:16,381 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:43:16,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:43:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 835105605, now seen corresponding path program 7 times [2023-12-24 23:43:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:43:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107239785] [2023-12-24 23:43:16,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:43:16,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:43:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:43:16,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:43:16,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 23:43:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:43:16,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 254 conjunts are in the unsatisfiable core [2023-12-24 23:43:16,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:43:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16399 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 23:43:21,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:43:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16399 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 23:43:55,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:43:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107239785] [2023-12-24 23:43:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107239785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:43:55,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:43:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 255 [2023-12-24 23:43:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011647119] [2023-12-24 23:43:55,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:43:55,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2023-12-24 23:43:55,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:43:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2023-12-24 23:43:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16638, Invalid=48642, Unknown=0, NotChecked=0, Total=65280 [2023-12-24 23:43:55,618 INFO L87 Difference]: Start difference. First operand 923 states and 944 transitions. Second operand has 256 states, 256 states have (on average 2.0234375) internal successors, (518), 255 states have internal predecessors, (518), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-24 23:53:26,777 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:53:26,794 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:53:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-24 23:53:26,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 599.9s TimeCoverageRelationStatistics Valid=26622, Invalid=60108, Unknown=0, NotChecked=0, Total=86730 [2023-12-24 23:53:26,818 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:53:26,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 32464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 32463 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-24 23:53:26,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:53:26,827 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 (13)] Ended with exit code 0 [2023-12-24 23:53:27,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:53:27,028 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (923states) and FLOYD_HOARE automaton (currently 168 states, 256 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 295 known predicates. [2023-12-24 23:53:27,032 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-12-24 23:53:27,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:53:27,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:53:27 BoogieIcfgContainer [2023-12-24 23:53:27,035 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:53:27,035 INFO L158 Benchmark]: Toolchain (without parser) took 879492.00ms. Allocated memory was 179.3MB in the beginning and 294.6MB in the end (delta: 115.3MB). Free memory was 132.9MB in the beginning and 138.1MB in the end (delta: -5.2MB). Peak memory consumption was 111.1MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,036 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:53:27,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.90ms. Allocated memory is still 179.3MB. Free memory was 132.9MB in the beginning and 121.7MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.43ms. Allocated memory is still 179.3MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,036 INFO L158 Benchmark]: Boogie Preprocessor took 27.95ms. Allocated memory is still 179.3MB. Free memory was 120.3MB in the beginning and 118.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,037 INFO L158 Benchmark]: RCFGBuilder took 238.63ms. Allocated memory is still 179.3MB. Free memory was 118.6MB in the beginning and 106.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,037 INFO L158 Benchmark]: TraceAbstraction took 879055.92ms. Allocated memory was 179.3MB in the beginning and 294.6MB in the end (delta: 115.3MB). Free memory was 106.0MB in the beginning and 138.1MB in the end (delta: -32.1MB). Peak memory consumption was 83.8MB. Max. memory is 8.0GB. [2023-12-24 23:53:27,038 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 135.90ms. Allocated memory is still 179.3MB. Free memory was 132.9MB in the beginning and 121.7MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.43ms. Allocated memory is still 179.3MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.95ms. Allocated memory is still 179.3MB. Free memory was 120.3MB in the beginning and 118.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 238.63ms. Allocated memory is still 179.3MB. Free memory was 118.6MB in the beginning and 106.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 879055.92ms. Allocated memory was 179.3MB in the beginning and 294.6MB in the end (delta: 115.3MB). Free memory was 106.0MB in the beginning and 138.1MB in the end (delta: -32.1MB). Peak memory consumption was 83.8MB. 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: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (923states) and FLOYD_HOARE automaton (currently 168 states, 256 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 295 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.0s, OverallIterations: 12, TraceHistogramMax: 128, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 818.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1900 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1890 mSDsluCounter, 1847 SdHoareTripleChecker+Invalid, 14.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1686 mSDsCounter, 2351 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44103 IncrementalHoareTripleChecker+Invalid, 46454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2351 mSolverCounterUnsat, 161 mSDtfsCounter, 44103 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2056 GetRequests, 1313 SyntacticMatches, 2 SemanticMatches, 740 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9045 ImplicationChecksByTransitivity, 852.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=10, InterpolantAutomatonStates: 349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 225 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 56.9s InterpolantComputationTime, 946 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 1834 ConstructedInterpolants, 0 QuantifiedInterpolants, 8017 SizeOfPredicates, 243 NumberOfNonLiveVariables, 1396 ConjunctsInSsa, 519 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 36258/78658 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