/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/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:29:12,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:29:12,686 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:29:12,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:29:12,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:29:12,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:29:12,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:29:12,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:29:12,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:29:12,703 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:29:12,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:29:12,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:29:12,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:29:12,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:29:12,704 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:29:12,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:29:12,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:29:12,705 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:29:12,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:29:12,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:29:12,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:29:12,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:29:12,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:29:12,706 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:29:12,706 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:29:12,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:29:12,707 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:29:12,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:29:12,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:29:12,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:29:12,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:29:12,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:29:12,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:29:12,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:29:12,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:29:12,710 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:29:12,710 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:29:12,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:29:12,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:29:12,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:29:12,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:29:12,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:29:12,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2023-12-16 16:29:13,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:29:14,009 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:29:14,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2023-12-16 16:29:14,015 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4e82e9c/44c050daf7974dd188dff4d18899707b/FLAG085b69dc6 [2023-12-16 16:29:14,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4e82e9c/44c050daf7974dd188dff4d18899707b [2023-12-16 16:29:14,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:29:14,032 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:29:14,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:29:14,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:29:14,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:29:14,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdf0655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14, skipping insertion in model container [2023-12-16 16:29:14,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:29:14,145 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i[893,906] [2023-12-16 16:29:14,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:29:14,171 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:29:14,179 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i[893,906] [2023-12-16 16:29:14,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:29:14,192 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:29:14,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14 WrapperNode [2023-12-16 16:29:14,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:29:14,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:29:14,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:29:14,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:29:14,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,225 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-12-16 16:29:14,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:29:14,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:29:14,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:29:14,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:29:14,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,240 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:29:14,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:29:14,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:29:14,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:29:14,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:29:14,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (1/1) ... [2023-12-16 16:29:14,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:29:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:29:14,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:29:14,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:29:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:29:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:29:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:29:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:29:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:29:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:29:14,428 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:29:14,430 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:29:14,561 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:29:14,583 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:29:14,584 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:29:14,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:29:14 BoogieIcfgContainer [2023-12-16 16:29:14,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:29:14,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:29:14,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:29:14,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:29:14,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:29:14" (1/3) ... [2023-12-16 16:29:14,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5068589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:29:14, skipping insertion in model container [2023-12-16 16:29:14,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:14" (2/3) ... [2023-12-16 16:29:14,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5068589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:29:14, skipping insertion in model container [2023-12-16 16:29:14,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:29:14" (3/3) ... [2023-12-16 16:29:14,589 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2023-12-16 16:29:14,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:29:14,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:29:14,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:29:14,638 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;@53d8d353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:29:14,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:29:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 20 states have (on average 1.7) internal successors, (34), 25 states have internal predecessors, (34), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:29:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 16:29:14,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:14,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:14,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:14,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1227943964, now seen corresponding path program 1 times [2023-12-16 16:29:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171236005] [2023-12-16 16:29:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:14,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:14,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:14,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:29:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:14,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:29:14,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:29:14,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:14,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171236005] [2023-12-16 16:29:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171236005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:14,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:14,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:29:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435932952] [2023-12-16 16:29:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:29:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:29:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:29:14,767 INFO L87 Difference]: Start difference. First operand has 39 states, 20 states have (on average 1.7) internal successors, (34), 25 states have internal predecessors, (34), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) 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) [2023-12-16 16:29:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:14,799 INFO L93 Difference]: Finished difference Result 76 states and 145 transitions. [2023-12-16 16:29:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:29:14,801 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 [2023-12-16 16:29:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:14,806 INFO L225 Difference]: With dead ends: 76 [2023-12-16 16:29:14,806 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 16:29:14,810 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 [2023-12-16 16:29:14,812 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:29:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 16:29:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-16 16:29:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 16:29:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2023-12-16 16:29:14,849 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 7 [2023-12-16 16:29:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:14,850 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 55 transitions. [2023-12-16 16:29:14,850 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) [2023-12-16 16:29:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-12-16 16:29:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:29:14,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:14,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:14,853 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 (2)] Ended with exit code 0 [2023-12-16 16:29:15,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:15,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -617670595, now seen corresponding path program 1 times [2023-12-16 16:29:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:15,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906484025] [2023-12-16 16:29:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:15,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:15,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:29:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:15,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:29:15,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:29:15,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:15,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906484025] [2023-12-16 16:29:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906484025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:15,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:29:15,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357464] [2023-12-16 16:29:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:29:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:29:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:29:15,140 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-16 16:29:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:15,237 INFO L93 Difference]: Finished difference Result 54 states and 78 transitions. [2023-12-16 16:29:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:29:15,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-12-16 16:29:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:15,238 INFO L225 Difference]: With dead ends: 54 [2023-12-16 16:29:15,238 INFO L226 Difference]: Without dead ends: 52 [2023-12-16 16:29:15,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:29:15,239 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:15,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-16 16:29:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2023-12-16 16:29:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.4) internal successors, (35), 32 states have internal predecessors, (35), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-16 16:29:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 69 transitions. [2023-12-16 16:29:15,249 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 69 transitions. Word has length 8 [2023-12-16 16:29:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:15,249 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 69 transitions. [2023-12-16 16:29:15,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-16 16:29:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2023-12-16 16:29:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 16:29:15,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:15,250 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:15,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 16:29:15,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:15,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1036244196, now seen corresponding path program 1 times [2023-12-16 16:29:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574945723] [2023-12-16 16:29:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:15,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:15,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:29:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:15,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:29:15,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:29:15,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:15,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:15,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574945723] [2023-12-16 16:29:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574945723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:29:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231924321] [2023-12-16 16:29:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:15,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:29:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:29:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:29:15,530 INFO L87 Difference]: Start difference. First operand 47 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:29:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:15,630 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2023-12-16 16:29:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:29:15,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-16 16:29:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:15,631 INFO L225 Difference]: With dead ends: 58 [2023-12-16 16:29:15,631 INFO L226 Difference]: Without dead ends: 50 [2023-12-16 16:29:15,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:29:15,633 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:15,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 194 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-16 16:29:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-12-16 16:29:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-16 16:29:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 66 transitions. [2023-12-16 16:29:15,639 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 66 transitions. Word has length 13 [2023-12-16 16:29:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:15,639 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 66 transitions. [2023-12-16 16:29:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:29:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 66 transitions. [2023-12-16 16:29:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 16:29:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:15,640 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:15,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:15,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1059029600, now seen corresponding path program 1 times [2023-12-16 16:29:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:15,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155966584] [2023-12-16 16:29:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:15,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:15,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:15,848 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 (5)] Waiting until timeout for monitored process [2023-12-16 16:29:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:15,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:29:15,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:29:15,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:15,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155966584] [2023-12-16 16:29:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155966584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:15,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:29:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206897912] [2023-12-16 16:29:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:29:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:29:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:29:15,949 INFO L87 Difference]: Start difference. First operand 46 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:29:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:16,025 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2023-12-16 16:29:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:29:16,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 16:29:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:16,029 INFO L225 Difference]: With dead ends: 56 [2023-12-16 16:29:16,029 INFO L226 Difference]: Without dead ends: 54 [2023-12-16 16:29:16,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:29:16,034 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:16,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 157 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-16 16:29:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-12-16 16:29:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 34 states have internal predecessors, (37), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:29:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 73 transitions. [2023-12-16 16:29:16,043 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 73 transitions. Word has length 14 [2023-12-16 16:29:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:16,043 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 73 transitions. [2023-12-16 16:29:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:29:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 73 transitions. [2023-12-16 16:29:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 16:29:16,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:16,044 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:16,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:16,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -429208225, now seen corresponding path program 1 times [2023-12-16 16:29:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307061202] [2023-12-16 16:29:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:16,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:16,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:16,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:29:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:16,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:29:16,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:29:16,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:16,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307061202] [2023-12-16 16:29:16,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307061202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:16,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:29:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670910630] [2023-12-16 16:29:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:29:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:29:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:29:16,320 INFO L87 Difference]: Start difference. First operand 52 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:29:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:16,465 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2023-12-16 16:29:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:29:16,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-16 16:29:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:16,467 INFO L225 Difference]: With dead ends: 86 [2023-12-16 16:29:16,467 INFO L226 Difference]: Without dead ends: 84 [2023-12-16 16:29:16,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:29:16,468 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:16,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 190 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-16 16:29:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-12-16 16:29:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 52 states have internal predecessors, (56), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 16 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 16:29:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 106 transitions. [2023-12-16 16:29:16,476 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 106 transitions. Word has length 22 [2023-12-16 16:29:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:16,476 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 106 transitions. [2023-12-16 16:29:16,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:29:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 106 transitions. [2023-12-16 16:29:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 16:29:16,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:16,477 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:16,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:16,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:16,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 390370178, now seen corresponding path program 1 times [2023-12-16 16:29:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858337229] [2023-12-16 16:29:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:16,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:16,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:16,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:29:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:16,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:29:16,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:29:16,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:16,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858337229] [2023-12-16 16:29:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858337229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:16,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 16:29:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167122208] [2023-12-16 16:29:16,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:16,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 16:29:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 16:29:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:29:16,832 INFO L87 Difference]: Start difference. First operand 73 states and 106 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:29:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:16,958 INFO L93 Difference]: Finished difference Result 90 states and 126 transitions. [2023-12-16 16:29:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:29:16,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-16 16:29:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:16,960 INFO L225 Difference]: With dead ends: 90 [2023-12-16 16:29:16,960 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 16:29:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:29:16,961 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 200 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 16:29:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2023-12-16 16:29:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 50 states have internal predecessors, (54), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (21), 16 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 16:29:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2023-12-16 16:29:16,968 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 27 [2023-12-16 16:29:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:16,968 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2023-12-16 16:29:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:29:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2023-12-16 16:29:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 16:29:16,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:16,969 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:16,973 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 [2023-12-16 16:29:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:17,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:17,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1660482618, now seen corresponding path program 1 times [2023-12-16 16:29:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645477888] [2023-12-16 16:29:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:17,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:17,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 16:29:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:17,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 16:29:17,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 16:29:17,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:29:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 16:29:17,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645477888] [2023-12-16 16:29:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645477888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:29:17,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:29:17,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-16 16:29:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222363213] [2023-12-16 16:29:17,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:29:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:29:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:29:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:29:17,516 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:29:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:17,922 INFO L93 Difference]: Finished difference Result 86 states and 118 transitions. [2023-12-16 16:29:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:29:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2023-12-16 16:29:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:17,924 INFO L225 Difference]: With dead ends: 86 [2023-12-16 16:29:17,924 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 16:29:17,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:29:17,925 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 65 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:17,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 269 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 16:29:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 16:29:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2023-12-16 16:29:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 52 states have internal predecessors, (56), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (16), 12 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:29:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2023-12-16 16:29:17,931 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 28 [2023-12-16 16:29:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:17,932 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2023-12-16 16:29:17,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:29:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2023-12-16 16:29:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 16:29:17,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:17,933 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:17,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:18,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:18,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1972780357, now seen corresponding path program 1 times [2023-12-16 16:29:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:18,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203324181] [2023-12-16 16:29:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:18,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:18,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:18,137 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:18,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 16:29:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:18,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:29:18,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 16:29:18,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:18,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203324181] [2023-12-16 16:29:18,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203324181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:18,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:18,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 16:29:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420668167] [2023-12-16 16:29:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:18,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 16:29:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 16:29:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:29:18,195 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:29:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:18,337 INFO L93 Difference]: Finished difference Result 109 states and 149 transitions. [2023-12-16 16:29:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:29:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-12-16 16:29:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:18,339 INFO L225 Difference]: With dead ends: 109 [2023-12-16 16:29:18,339 INFO L226 Difference]: Without dead ends: 103 [2023-12-16 16:29:18,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:29:18,341 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:18,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 290 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-16 16:29:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2023-12-16 16:29:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.25) internal successors, (75), 68 states have internal predecessors, (75), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 16:29:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2023-12-16 16:29:18,356 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 36 [2023-12-16 16:29:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2023-12-16 16:29:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:29:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2023-12-16 16:29:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 16:29:18,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:18,363 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:18,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:18,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:18,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1081050695, now seen corresponding path program 1 times [2023-12-16 16:29:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454210138] [2023-12-16 16:29:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:18,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 16:29:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:18,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:29:18,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:29:18,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:29:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:29:18,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454210138] [2023-12-16 16:29:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454210138] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:29:18,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:29:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 16:29:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798281065] [2023-12-16 16:29:18,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:29:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:29:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:29:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:29:18,766 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 16:29:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:19,230 INFO L93 Difference]: Finished difference Result 234 states and 344 transitions. [2023-12-16 16:29:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:29:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 49 [2023-12-16 16:29:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:19,232 INFO L225 Difference]: With dead ends: 234 [2023-12-16 16:29:19,232 INFO L226 Difference]: Without dead ends: 212 [2023-12-16 16:29:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:29:19,233 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 204 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:19,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 687 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:29:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-16 16:29:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2023-12-16 16:29:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 128 states have (on average 1.234375) internal successors, (158), 136 states have internal predecessors, (158), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (64), 60 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-16 16:29:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 290 transitions. [2023-12-16 16:29:19,252 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 290 transitions. Word has length 49 [2023-12-16 16:29:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:19,253 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 290 transitions. [2023-12-16 16:29:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 16:29:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 290 transitions. [2023-12-16 16:29:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-16 16:29:19,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:19,254 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:19,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:19,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:19,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 872342623, now seen corresponding path program 1 times [2023-12-16 16:29:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169405284] [2023-12-16 16:29:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:19,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:19,458 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:19,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 16:29:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:19,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:29:19,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 32 proven. 57 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 16:29:19,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:29:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 32 proven. 57 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 16:29:19,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:19,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169405284] [2023-12-16 16:29:19,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169405284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:29:19,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:29:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-16 16:29:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987881326] [2023-12-16 16:29:19,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:29:19,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 16:29:19,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 16:29:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:29:19,935 INFO L87 Difference]: Start difference. First operand 204 states and 290 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 22 states have internal predecessors, (73), 18 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 16 states have call predecessors, (32), 16 states have call successors, (32) [2023-12-16 16:29:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:21,582 INFO L93 Difference]: Finished difference Result 468 states and 707 transitions. [2023-12-16 16:29:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 16:29:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 22 states have internal predecessors, (73), 18 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 16 states have call predecessors, (32), 16 states have call successors, (32) Word has length 117 [2023-12-16 16:29:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:21,584 INFO L225 Difference]: With dead ends: 468 [2023-12-16 16:29:21,584 INFO L226 Difference]: Without dead ends: 426 [2023-12-16 16:29:21,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 16:29:21,586 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1046 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:21,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 2048 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 16:29:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-16 16:29:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 418. [2023-12-16 16:29:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 261 states have (on average 1.2298850574712643) internal successors, (321), 269 states have internal predecessors, (321), 148 states have call successors, (148), 8 states have call predecessors, (148), 8 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-16 16:29:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 613 transitions. [2023-12-16 16:29:21,623 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 613 transitions. Word has length 117 [2023-12-16 16:29:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:21,625 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 613 transitions. [2023-12-16 16:29:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 22 states have internal predecessors, (73), 18 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 16 states have call predecessors, (32), 16 states have call successors, (32) [2023-12-16 16:29:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 613 transitions. [2023-12-16 16:29:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-16 16:29:21,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:21,636 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:21,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:21,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:21,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:21,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -453739451, now seen corresponding path program 2 times [2023-12-16 16:29:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514579455] [2023-12-16 16:29:21,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:29:21,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:21,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:21,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 16:29:21,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:29:21,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:29:21,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 16:29:21,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 72 proven. 372 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-16 16:29:22,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:29:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 72 proven. 372 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-16 16:29:23,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514579455] [2023-12-16 16:29:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514579455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:29:23,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:29:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2023-12-16 16:29:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912045818] [2023-12-16 16:29:23,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:29:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-16 16:29:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-16 16:29:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 16:29:23,096 INFO L87 Difference]: Start difference. First operand 418 states and 613 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 42 states have internal predecessors, (143), 38 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 36 states have call predecessors, (72), 36 states have call successors, (72) [2023-12-16 16:29:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:29,167 INFO L93 Difference]: Finished difference Result 932 states and 1430 transitions. [2023-12-16 16:29:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 16:29:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 42 states have internal predecessors, (143), 38 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 36 states have call predecessors, (72), 36 states have call successors, (72) Word has length 252 [2023-12-16 16:29:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:29,172 INFO L225 Difference]: With dead ends: 932 [2023-12-16 16:29:29,172 INFO L226 Difference]: Without dead ends: 850 [2023-12-16 16:29:29,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1174, Invalid=2732, Unknown=0, NotChecked=0, Total=3906 [2023-12-16 16:29:29,174 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 3931 mSDsluCounter, 7562 mSDsCounter, 0 mSdLazyCounter, 6649 mSolverCounterSat, 3093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 9742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3093 IncrementalHoareTripleChecker+Valid, 6649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:29,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4051 Valid, 7957 Invalid, 9742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3093 Valid, 6649 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 16:29:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-12-16 16:29:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 842. [2023-12-16 16:29:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 524 states have (on average 1.2290076335877862) internal successors, (644), 532 states have internal predecessors, (644), 308 states have call successors, (308), 9 states have call predecessors, (308), 9 states have return successors, (304), 300 states have call predecessors, (304), 304 states have call successors, (304) [2023-12-16 16:29:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1256 transitions. [2023-12-16 16:29:29,241 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1256 transitions. Word has length 252 [2023-12-16 16:29:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:29,242 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1256 transitions. [2023-12-16 16:29:29,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 42 states have internal predecessors, (143), 38 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 36 states have call predecessors, (72), 36 states have call successors, (72) [2023-12-16 16:29:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1256 transitions. [2023-12-16 16:29:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-16 16:29:29,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:29,251 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 76, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:29,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:29,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:29,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:29,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash -331365627, now seen corresponding path program 3 times [2023-12-16 16:29:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847748993] [2023-12-16 16:29:29,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:29:29,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:29,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:29,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:29,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 16:29:29,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:29:29,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:29:29,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:29:29,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13379 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 13227 trivial. 0 not checked. [2023-12-16 16:29:29,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:29:29,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847748993] [2023-12-16 16:29:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847748993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:29:29,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:29:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:29:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740407823] [2023-12-16 16:29:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:29:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:29:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:29:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:29:29,946 INFO L87 Difference]: Start difference. First operand 842 states and 1256 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 16:29:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:29:30,057 INFO L93 Difference]: Finished difference Result 848 states and 1261 transitions. [2023-12-16 16:29:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:29:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 522 [2023-12-16 16:29:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:29:30,063 INFO L225 Difference]: With dead ends: 848 [2023-12-16 16:29:30,063 INFO L226 Difference]: Without dead ends: 839 [2023-12-16 16:29:30,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:29:30,064 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:30,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:29:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-16 16:29:30,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-12-16 16:29:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 524 states have (on average 1.2232824427480915) internal successors, (641), 529 states have internal predecessors, (641), 305 states have call successors, (305), 9 states have call predecessors, (305), 9 states have return successors, (304), 300 states have call predecessors, (304), 304 states have call successors, (304) [2023-12-16 16:29:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1250 transitions. [2023-12-16 16:29:30,110 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1250 transitions. Word has length 522 [2023-12-16 16:29:30,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:29:30,110 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1250 transitions. [2023-12-16 16:29:30,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 16:29:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1250 transitions. [2023-12-16 16:29:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-16 16:29:30,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:29:30,118 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 76, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:29:30,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:30,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:30,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:29:30,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:29:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -327552379, now seen corresponding path program 1 times [2023-12-16 16:29:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:29:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936223982] [2023-12-16 16:29:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:29:30,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:30,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:29:30,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:29:30,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 16:29:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:29:30,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 16:29:30,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:29:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13397 backedges. 152 proven. 1845 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 16:29:31,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:29:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13397 backedges. 152 proven. 1845 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 16:29:34,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:29:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936223982] [2023-12-16 16:29:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936223982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:29:34,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:29:34,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 84 [2023-12-16 16:29:34,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221918974] [2023-12-16 16:29:34,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:29:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-16 16:29:34,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:29:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-16 16:29:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1688, Invalid=5284, Unknown=0, NotChecked=0, Total=6972 [2023-12-16 16:29:34,130 INFO L87 Difference]: Start difference. First operand 839 states and 1250 transitions. Second operand has 84 states, 84 states have (on average 3.369047619047619) internal successors, (283), 82 states have internal predecessors, (283), 78 states have call successors, (154), 3 states have call predecessors, (154), 1 states have return successors, (152), 76 states have call predecessors, (152), 76 states have call successors, (152) [2023-12-16 16:30:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:01,895 INFO L93 Difference]: Finished difference Result 1733 states and 2627 transitions. [2023-12-16 16:30:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-16 16:30:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.369047619047619) internal successors, (283), 82 states have internal predecessors, (283), 78 states have call successors, (154), 3 states have call predecessors, (154), 1 states have return successors, (152), 76 states have call predecessors, (152), 76 states have call successors, (152) Word has length 522 [2023-12-16 16:30:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:01,902 INFO L225 Difference]: With dead ends: 1733 [2023-12-16 16:30:01,902 INFO L226 Difference]: Without dead ends: 1691 [2023-12-16 16:30:01,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=4734, Invalid=10272, Unknown=0, NotChecked=0, Total=15006 [2023-12-16 16:30:01,906 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 14618 mSDsluCounter, 27030 mSDsCounter, 0 mSdLazyCounter, 24061 mSolverCounterSat, 13385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14858 SdHoareTripleChecker+Valid, 27842 SdHoareTripleChecker+Invalid, 37446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13385 IncrementalHoareTripleChecker+Valid, 24061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:01,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14858 Valid, 27842 Invalid, 37446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13385 Valid, 24061 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-16 16:30:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2023-12-16 16:30:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1683. [2023-12-16 16:30:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1047 states have (on average 1.2263610315186246) internal successors, (1284), 1052 states have internal predecessors, (1284), 625 states have call successors, (625), 10 states have call predecessors, (625), 10 states have return successors, (624), 620 states have call predecessors, (624), 624 states have call successors, (624) [2023-12-16 16:30:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2533 transitions. [2023-12-16 16:30:01,995 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2533 transitions. Word has length 522 [2023-12-16 16:30:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:01,995 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2533 transitions. [2023-12-16 16:30:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.369047619047619) internal successors, (283), 82 states have internal predecessors, (283), 78 states have call successors, (154), 3 states have call predecessors, (154), 1 states have return successors, (152), 76 states have call predecessors, (152), 76 states have call successors, (152) [2023-12-16 16:30:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2533 transitions. [2023-12-16 16:30:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-12-16 16:30:02,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:02,023 INFO L195 NwaCegarLoop]: trace histogram [157, 156, 156, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:02,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-16 16:30:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:02,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:02,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1538519035, now seen corresponding path program 2 times [2023-12-16 16:30:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:02,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528819282] [2023-12-16 16:30:02,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:02,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:02,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 16:30:02,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:02,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:02,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-16 16:30:02,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 56747 backedges. 312 proven. 8075 refuted. 0 times theorem prover too weak. 48360 trivial. 0 not checked. [2023-12-16 16:30:05,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 56747 backedges. 312 proven. 8075 refuted. 0 times theorem prover too weak. 48360 trivial. 0 not checked. [2023-12-16 16:30:15,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:15,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528819282] [2023-12-16 16:30:15,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528819282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:15,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:15,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 164 [2023-12-16 16:30:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044964434] [2023-12-16 16:30:15,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:15,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-16 16:30:15,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-16 16:30:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6568, Invalid=20164, Unknown=0, NotChecked=0, Total=26732 [2023-12-16 16:30:15,245 INFO L87 Difference]: Start difference. First operand 1683 states and 2533 transitions. Second operand has 164 states, 164 states have (on average 3.432926829268293) internal successors, (563), 162 states have internal predecessors, (563), 158 states have call successors, (314), 3 states have call predecessors, (314), 1 states have return successors, (312), 156 states have call predecessors, (312), 156 states have call successors, (312) Received shutdown request... [2023-12-16 16:30:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 16:30:24,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 1960 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=6574, Invalid=20486, Unknown=0, NotChecked=0, Total=27060 [2023-12-16 16:30:24,824 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 6514 mSDsluCounter, 30070 mSDsCounter, 0 mSdLazyCounter, 26564 mSolverCounterSat, 5756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6640 SdHoareTripleChecker+Valid, 30524 SdHoareTripleChecker+Invalid, 32320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5756 IncrementalHoareTripleChecker+Valid, 26564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:24,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6640 Valid, 30524 Invalid, 32320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5756 Valid, 26564 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-16 16:30:24,825 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:30:24,832 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:30:24,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-16 16:30:24,858 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:30:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:25,027 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1683states) and FLOYD_HOARE automaton (currently 29 states, 164 states before enhancement),while ReachableStatesComputation was computing reachable states (489 states constructed, input type IntersectNwa). [2023-12-16 16:30:25,030 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:25,031 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:30:25,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:30:25 BoogieIcfgContainer [2023-12-16 16:30:25,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:30:25,033 INFO L158 Benchmark]: Toolchain (without parser) took 71001.19ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 218.6MB in the beginning and 101.7MB in the end (delta: 116.9MB). Peak memory consumption was 189.6MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,033 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:30:25,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.89ms. Allocated memory is still 271.6MB. Free memory was 218.6MB in the beginning and 206.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.93ms. Allocated memory is still 271.6MB. Free memory was 206.7MB in the beginning and 205.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,034 INFO L158 Benchmark]: Boogie Preprocessor took 21.12ms. Allocated memory is still 271.6MB. Free memory was 205.4MB in the beginning and 203.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,034 INFO L158 Benchmark]: RCFGBuilder took 336.62ms. Allocated memory is still 271.6MB. Free memory was 203.3MB in the beginning and 190.0MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,034 INFO L158 Benchmark]: TraceAbstraction took 70447.19ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 189.3MB in the beginning and 101.7MB in the end (delta: 87.5MB). Peak memory consumption was 160.2MB. Max. memory is 8.0GB. [2023-12-16 16:30:25,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.89ms. Allocated memory is still 271.6MB. Free memory was 218.6MB in the beginning and 206.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.93ms. Allocated memory is still 271.6MB. Free memory was 206.7MB in the beginning and 205.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.12ms. Allocated memory is still 271.6MB. Free memory was 205.4MB in the beginning and 203.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 336.62ms. Allocated memory is still 271.6MB. Free memory was 203.3MB in the beginning and 190.0MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 70447.19ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 189.3MB in the beginning and 101.7MB in the end (delta: 87.5MB). Peak memory consumption was 160.2MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (1683states) and FLOYD_HOARE automaton (currently 29 states, 164 states before enhancement),while ReachableStatesComputation was computing reachable states (489 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.4s, OverallIterations: 14, TraceHistogramMax: 157, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 46.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27121 SdHoareTripleChecker+Valid, 27.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26484 mSDsluCounter, 70708 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68372 mSDsCounter, 23519 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60570 IncrementalHoareTripleChecker+Invalid, 84089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23519 mSolverCounterUnsat, 2336 mSDtfsCounter, 60570 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4774 GetRequests, 4328 SyntacticMatches, 0 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1683occurred in iteration=13, InterpolantAutomatonStates: 218, 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, 13 MinimizatonAttempts, 79 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 2679 NumberOfCodeBlocks, 2173 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4689 ConstructedInterpolants, 0 QuantifiedInterpolants, 10794 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2965 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 140271/160985 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