/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/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:43:24,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:43:25,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:43:25,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:43:25,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:43:25,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:43:25,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:43:25,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:43:25,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:43:25,061 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:43:25,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:43:25,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:43:25,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:43:25,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:43:25,063 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:43:25,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:43:25,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:43:25,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:43:25,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:43:25,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:43:25,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:43:25,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:43:25,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:43:25,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:43:25,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:43:25,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:43:25,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:43:25,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:43:25,068 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:43:25,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:43:25,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:43:25,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:43:25,280 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:43:25,281 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:43:25,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2023-12-24 22:43:26,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:43:26,338 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:43:26,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2023-12-24 22:43:26,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cde0fa48/8b7603e571564eac836ac70959a24f82/FLAGde2527f52 [2023-12-24 22:43:26,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cde0fa48/8b7603e571564eac836ac70959a24f82 [2023-12-24 22:43:26,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:43:26,356 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:43:26,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:43:26,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:43:26,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:43:26,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc4a0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26, skipping insertion in model container [2023-12-24 22:43:26,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,375 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:43:26,485 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/nested6.i[893,906] [2023-12-24 22:43:26,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:43:26,504 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:43:26,512 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/nested6.i[893,906] [2023-12-24 22:43:26,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:43:26,523 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:43:26,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26 WrapperNode [2023-12-24 22:43:26,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:43:26,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:43:26,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:43:26,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:43:26,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,550 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-24 22:43:26,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:43:26,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:43:26,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:43:26,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:43:26,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,564 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 22:43:26,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:43:26,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:43:26,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:43:26,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:43:26,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (1/1) ... [2023-12-24 22:43:26,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:43:26,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:43:26,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 22:43:26,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 22:43:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:43:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:43:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:43:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:43:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-24 22:43:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-24 22:43:26,657 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:43:26,658 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:43:26,748 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:43:26,762 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:43:26,763 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-24 22:43:26,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:43:26 BoogieIcfgContainer [2023-12-24 22:43:26,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:43:26,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:43:26,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:43:26,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:43:26,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:43:26" (1/3) ... [2023-12-24 22:43:26,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ecbd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:43:26, skipping insertion in model container [2023-12-24 22:43:26,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:43:26" (2/3) ... [2023-12-24 22:43:26,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ecbd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:43:26, skipping insertion in model container [2023-12-24 22:43:26,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:43:26" (3/3) ... [2023-12-24 22:43:26,768 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6.i [2023-12-24 22:43:26,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:43:26,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:43:26,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:43:26,809 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;@4303480b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:43:26,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:43:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-24 22:43:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:43:26,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:26,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:26,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:26,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1174528960, now seen corresponding path program 1 times [2023-12-24 22:43:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251282471] [2023-12-24 22:43:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:26,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:26,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:26,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 22:43:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:26,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:43:26,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:26,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:43:26,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251282471] [2023-12-24 22:43:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251282471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:43:26,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:43:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 22:43:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330576670] [2023-12-24 22:43:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:43:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 22:43:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 22:43:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:43:26,962 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:27,091 INFO L93 Difference]: Finished difference Result 54 states and 86 transitions. [2023-12-24 22:43:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 22:43:27,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-24 22:43:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:27,099 INFO L225 Difference]: With dead ends: 54 [2023-12-24 22:43:27,099 INFO L226 Difference]: Without dead ends: 30 [2023-12-24 22:43:27,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:43:27,106 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:27,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 70 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:43:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-24 22:43:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-24 22:43:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 22:43:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-12-24 22:43:27,136 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 10 [2023-12-24 22:43:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-12-24 22:43:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-12-24 22:43:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 22:43:27,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:27,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:27,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:27,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1752396037, now seen corresponding path program 1 times [2023-12-24 22:43:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275384018] [2023-12-24 22:43:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:27,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:27,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:27,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 22:43:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:27,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:43:27,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:27,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:43:27,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275384018] [2023-12-24 22:43:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275384018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:43:27,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:43:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 22:43:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913274876] [2023-12-24 22:43:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:43:27,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 22:43:27,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:27,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 22:43:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:43:27,436 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:27,585 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2023-12-24 22:43:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 22:43:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 11 [2023-12-24 22:43:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:27,587 INFO L225 Difference]: With dead ends: 72 [2023-12-24 22:43:27,587 INFO L226 Difference]: Without dead ends: 70 [2023-12-24 22:43:27,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:43:27,588 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:27,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 98 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:43:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-24 22:43:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2023-12-24 22:43:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-24 22:43:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-12-24 22:43:27,597 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 11 [2023-12-24 22:43:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:27,597 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-12-24 22:43:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-12-24 22:43:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:43:27,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:27,598 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:27,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 22:43:27,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:27,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:27,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1598297924, now seen corresponding path program 1 times [2023-12-24 22:43:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:27,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183393954] [2023-12-24 22:43:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:27,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:27,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:27,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:27,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 22:43:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:27,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:43:27,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:27,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 22:43:27,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183393954] [2023-12-24 22:43:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183393954] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 22:43:27,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 22:43:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-24 22:43:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14644552] [2023-12-24 22:43:27,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:43:27,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:43:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:43:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:43:27,923 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:28,051 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2023-12-24 22:43:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 22:43:28,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 14 [2023-12-24 22:43:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:28,054 INFO L225 Difference]: With dead ends: 70 [2023-12-24 22:43:28,054 INFO L226 Difference]: Without dead ends: 68 [2023-12-24 22:43:28,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:43:28,056 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:28,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 86 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:43:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-24 22:43:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 40. [2023-12-24 22:43:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-24 22:43:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-24 22:43:28,063 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 14 [2023-12-24 22:43:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-24 22:43:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-24 22:43:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:43:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:28,064 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:28,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 22:43:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:28,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1155189617, now seen corresponding path program 1 times [2023-12-24 22:43:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089408781] [2023-12-24 22:43:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:28,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:28,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:43:28,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 22:43:28,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:28,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:43:28,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089408781] [2023-12-24 22:43:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089408781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:43:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:43:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 22:43:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285605459] [2023-12-24 22:43:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:43:28,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 22:43:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 22:43:28,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:43:28,322 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:28,360 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2023-12-24 22:43:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 22:43:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2023-12-24 22:43:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:28,361 INFO L225 Difference]: With dead ends: 50 [2023-12-24 22:43:28,361 INFO L226 Difference]: Without dead ends: 48 [2023-12-24 22:43:28,362 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 [2023-12-24 22:43:28,362 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:28,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:43:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-24 22:43:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-24 22:43:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-24 22:43:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2023-12-24 22:43:28,372 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 14 [2023-12-24 22:43:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2023-12-24 22:43:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2023-12-24 22:43:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 22:43:28,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:28,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:28,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:28,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:28,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:28,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 959227892, now seen corresponding path program 1 times [2023-12-24 22:43:28,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:28,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169163858] [2023-12-24 22:43:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:28,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:28,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:28,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:28,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 22:43:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:28,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:43:28,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:28,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:28,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169163858] [2023-12-24 22:43:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169163858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:28,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-24 22:43:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473727052] [2023-12-24 22:43:28,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 22:43:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 22:43:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:43:28,751 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:29,275 INFO L93 Difference]: Finished difference Result 148 states and 214 transitions. [2023-12-24 22:43:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 22:43:29,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-24 22:43:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:29,277 INFO L225 Difference]: With dead ends: 148 [2023-12-24 22:43:29,277 INFO L226 Difference]: Without dead ends: 146 [2023-12-24 22:43:29,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:43:29,278 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:29,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 189 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:43:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-24 22:43:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 73. [2023-12-24 22:43:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 58 states have internal predecessors, (75), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 22:43:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2023-12-24 22:43:29,293 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 15 [2023-12-24 22:43:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:29,294 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2023-12-24 22:43:29,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2023-12-24 22:43:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:43:29,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:29,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:29,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:29,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:29,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:29,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1339536636, now seen corresponding path program 1 times [2023-12-24 22:43:29,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:29,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753425004] [2023-12-24 22:43:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:29,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:29,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:29,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 22:43:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:29,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:43:29,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:29,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:29,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753425004] [2023-12-24 22:43:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753425004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:29,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-24 22:43:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645745269] [2023-12-24 22:43:29,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:29,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 22:43:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 22:43:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:43:29,688 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 22:43:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:30,330 INFO L93 Difference]: Finished difference Result 207 states and 303 transitions. [2023-12-24 22:43:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 22:43:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-24 22:43:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:30,332 INFO L225 Difference]: With dead ends: 207 [2023-12-24 22:43:30,332 INFO L226 Difference]: Without dead ends: 205 [2023-12-24 22:43:30,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:43:30,333 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 97 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:30,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 175 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:43:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-24 22:43:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 84. [2023-12-24 22:43:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 66 states have internal predecessors, (84), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-24 22:43:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2023-12-24 22:43:30,348 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 18 [2023-12-24 22:43:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:30,348 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2023-12-24 22:43:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 22:43:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2023-12-24 22:43:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 22:43:30,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:30,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:30,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:30,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -242896495, now seen corresponding path program 1 times [2023-12-24 22:43:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104656586] [2023-12-24 22:43:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:30,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:30,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:30,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 22:43:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:30,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:43:30,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:30,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:30,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104656586] [2023-12-24 22:43:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104656586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:30,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 22:43:30,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891103552] [2023-12-24 22:43:30,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:30,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:43:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:43:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:43:30,713 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 22:43:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:31,185 INFO L93 Difference]: Finished difference Result 243 states and 341 transitions. [2023-12-24 22:43:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 22:43:31,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-12-24 22:43:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:31,186 INFO L225 Difference]: With dead ends: 243 [2023-12-24 22:43:31,186 INFO L226 Difference]: Without dead ends: 179 [2023-12-24 22:43:31,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-12-24 22:43:31,188 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 159 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:31,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 72 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:43:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-24 22:43:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 103. [2023-12-24 22:43:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.358974358974359) internal successors, (106), 82 states have internal predecessors, (106), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 22:43:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2023-12-24 22:43:31,203 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 19 [2023-12-24 22:43:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2023-12-24 22:43:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-24 22:43:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2023-12-24 22:43:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:43:31,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:31,204 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:31,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:31,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:31,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:31,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash -521634383, now seen corresponding path program 1 times [2023-12-24 22:43:31,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:31,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685515046] [2023-12-24 22:43:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:31,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:31,409 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:31,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 22:43:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:31,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:43:31,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 22:43:31,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-24 22:43:31,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685515046] [2023-12-24 22:43:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685515046] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 22:43:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 22:43:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-24 22:43:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577936797] [2023-12-24 22:43:31,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:43:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:43:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:43:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-24 22:43:31,664 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-24 22:43:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:31,750 INFO L93 Difference]: Finished difference Result 122 states and 159 transitions. [2023-12-24 22:43:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 22:43:31,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2023-12-24 22:43:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:31,751 INFO L225 Difference]: With dead ends: 122 [2023-12-24 22:43:31,751 INFO L226 Difference]: Without dead ends: 120 [2023-12-24 22:43:31,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:43:31,752 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:31,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:43:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-24 22:43:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 88. [2023-12-24 22:43:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 69 states have internal predecessors, (85), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-24 22:43:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2023-12-24 22:43:31,763 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 33 [2023-12-24 22:43:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:31,763 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2023-12-24 22:43:31,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-24 22:43:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2023-12-24 22:43:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:43:31,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:31,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:31,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:31,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:31,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1979416583, now seen corresponding path program 1 times [2023-12-24 22:43:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012049215] [2023-12-24 22:43:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:31,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:31,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 22:43:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:31,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 22:43:31,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-24 22:43:32,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-24 22:43:32,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012049215] [2023-12-24 22:43:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012049215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:32,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-24 22:43:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198640411] [2023-12-24 22:43:32,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 22:43:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 22:43:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:43:32,295 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:36,053 INFO L93 Difference]: Finished difference Result 478 states and 737 transitions. [2023-12-24 22:43:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-24 22:43:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 33 [2023-12-24 22:43:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:36,056 INFO L225 Difference]: With dead ends: 478 [2023-12-24 22:43:36,056 INFO L226 Difference]: Without dead ends: 476 [2023-12-24 22:43:36,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1073, Invalid=3483, Unknown=0, NotChecked=0, Total=4556 [2023-12-24 22:43:36,058 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 257 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:36,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 365 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 22:43:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-24 22:43:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 223. [2023-12-24 22:43:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 151 states have (on average 1.4635761589403973) internal successors, (221), 171 states have internal predecessors, (221), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 47 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-24 22:43:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 339 transitions. [2023-12-24 22:43:36,106 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 339 transitions. Word has length 33 [2023-12-24 22:43:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:36,106 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 339 transitions. [2023-12-24 22:43:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 339 transitions. [2023-12-24 22:43:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-24 22:43:36,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:36,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 22:43:36,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:36,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:36,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:36,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 655261671, now seen corresponding path program 1 times [2023-12-24 22:43:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550522233] [2023-12-24 22:43:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:43:36,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:36,312 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:36,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 22:43:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:43:36,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 22:43:36,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 22:43:36,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 22:43:36,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:36,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550522233] [2023-12-24 22:43:36,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550522233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:36,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:36,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 22:43:36,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118201734] [2023-12-24 22:43:36,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:36,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 22:43:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 22:43:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:43:36,761 INFO L87 Difference]: Start difference. First operand 223 states and 339 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:41,510 INFO L93 Difference]: Finished difference Result 830 states and 1317 transitions. [2023-12-24 22:43:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-24 22:43:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2023-12-24 22:43:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:41,514 INFO L225 Difference]: With dead ends: 830 [2023-12-24 22:43:41,514 INFO L226 Difference]: Without dead ends: 828 [2023-12-24 22:43:41,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3601 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1929, Invalid=7773, Unknown=0, NotChecked=0, Total=9702 [2023-12-24 22:43:41,517 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 486 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:41,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 742 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 22:43:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-24 22:43:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 441. [2023-12-24 22:43:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 297 states have (on average 1.5185185185185186) internal successors, (451), 341 states have internal predecessors, (451), 127 states have call successors, (127), 16 states have call predecessors, (127), 16 states have return successors, (127), 101 states have call predecessors, (127), 127 states have call successors, (127) [2023-12-24 22:43:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 705 transitions. [2023-12-24 22:43:41,603 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 705 transitions. Word has length 39 [2023-12-24 22:43:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:41,604 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 705 transitions. [2023-12-24 22:43:41,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 705 transitions. [2023-12-24 22:43:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-24 22:43:41,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:41,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:41,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:41,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:41,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:41,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash 114957278, now seen corresponding path program 2 times [2023-12-24 22:43:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029702471] [2023-12-24 22:43:41,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:43:41,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:41,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:41,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:41,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 22:43:41,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:43:41,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:41,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 22:43:41,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 22:43:41,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-24 22:43:42,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029702471] [2023-12-24 22:43:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029702471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:42,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-24 22:43:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432820005] [2023-12-24 22:43:42,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 22:43:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 22:43:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-12-24 22:43:42,269 INFO L87 Difference]: Start difference. First operand 441 states and 705 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 20 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:51,397 INFO L93 Difference]: Finished difference Result 1058 states and 1672 transitions. [2023-12-24 22:43:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-24 22:43:51,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 20 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-12-24 22:43:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:51,401 INFO L225 Difference]: With dead ends: 1058 [2023-12-24 22:43:51,401 INFO L226 Difference]: Without dead ends: 1056 [2023-12-24 22:43:51,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6114 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3052, Invalid=12448, Unknown=0, NotChecked=0, Total=15500 [2023-12-24 22:43:51,405 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 579 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:51,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 589 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 22:43:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-24 22:43:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 566. [2023-12-24 22:43:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 375 states have (on average 1.5226666666666666) internal successors, (571), 433 states have internal predecessors, (571), 169 states have call successors, (169), 21 states have call predecessors, (169), 21 states have return successors, (169), 136 states have call predecessors, (169), 169 states have call successors, (169) [2023-12-24 22:43:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 909 transitions. [2023-12-24 22:43:51,527 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 909 transitions. Word has length 44 [2023-12-24 22:43:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:51,527 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 909 transitions. [2023-12-24 22:43:51,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 20 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 909 transitions. [2023-12-24 22:43:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-24 22:43:51,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:51,531 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 22:43:51,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:51,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:51,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:51,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash -132339592, now seen corresponding path program 3 times [2023-12-24 22:43:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206610492] [2023-12-24 22:43:51,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:43:51,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:51,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:51,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:43:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 22:43:51,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 22:43:51,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:51,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 22:43:51,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 43 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-24 22:43:52,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 22:43:53,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206610492] [2023-12-24 22:43:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206610492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:53,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2023-12-24 22:43:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163243137] [2023-12-24 22:43:53,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:53,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:43:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:43:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:43:53,399 INFO L87 Difference]: Start difference. First operand 566 states and 909 transitions. Second operand has 26 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:57,832 INFO L93 Difference]: Finished difference Result 1409 states and 2239 transitions. [2023-12-24 22:43:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 22:43:57,833 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-12-24 22:43:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:57,833 INFO L225 Difference]: With dead ends: 1409 [2023-12-24 22:43:57,834 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 22:43:57,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=892, Invalid=4078, Unknown=0, NotChecked=0, Total=4970 [2023-12-24 22:43:57,838 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 261 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:57,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 164 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 22:43:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 22:43:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 22:43:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:43:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 22:43:57,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2023-12-24 22:43:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 22:43:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 22:43:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 22:43:57,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 22:43:57,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:43:57,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:58,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 22:58:07,874 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-86-14-28-9-25-7-21-6-21-5-21-5-21-5-7-5-3-3-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-135-14-28-9-25-7-21-6-21-6-21-5-21-5-7-5-3-3-1 context. [2023-12-24 22:58:07,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 22:58:07,878 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 22:58:07,879 INFO L158 Benchmark]: Toolchain (without parser) took 881523.00ms. Allocated memory was 309.3MB in the beginning and 641.7MB in the end (delta: 332.4MB). Free memory was 260.1MB in the beginning and 332.8MB in the end (delta: -72.7MB). Peak memory consumption was 260.4MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,879 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 222.3MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:58:07,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.61ms. Allocated memory is still 309.3MB. Free memory was 259.8MB in the beginning and 248.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.36ms. Allocated memory is still 309.3MB. Free memory was 248.5MB in the beginning and 246.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,880 INFO L158 Benchmark]: Boogie Preprocessor took 20.51ms. Allocated memory is still 309.3MB. Free memory was 246.8MB in the beginning and 245.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,880 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:58:07,880 INFO L158 Benchmark]: RCFGBuilder took 191.39ms. Allocated memory is still 309.3MB. Free memory was 245.1MB in the beginning and 233.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,880 INFO L158 Benchmark]: TraceAbstraction took 881114.26ms. Allocated memory was 309.3MB in the beginning and 641.7MB in the end (delta: 332.4MB). Free memory was 232.5MB in the beginning and 332.8MB in the end (delta: -100.3MB). Peak memory consumption was 233.1MB. Max. memory is 8.0GB. [2023-12-24 22:58:07,882 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 222.3MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.61ms. Allocated memory is still 309.3MB. Free memory was 259.8MB in the beginning and 248.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.36ms. Allocated memory is still 309.3MB. Free memory was 248.5MB in the beginning and 246.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.51ms. Allocated memory is still 309.3MB. Free memory was 246.8MB in the beginning and 245.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 191.39ms. Allocated memory is still 309.3MB. Free memory was 245.1MB in the beginning and 233.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 881114.26ms. Allocated memory was 309.3MB in the beginning and 641.7MB in the end (delta: 332.4MB). Free memory was 232.5MB in the beginning and 332.8MB in the end (delta: -100.3MB). Peak memory consumption was 233.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown