/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/nla-digbench-scaling/prodbin-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 04:33:55,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 04:33:55,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 04:33:55,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 04:33:55,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 04:33:55,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 04:33:55,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 04:33:55,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 04:33:55,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 04:33:55,964 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 04:33:55,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 04:33:55,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 04:33:55,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 04:33:55,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 04:33:55,966 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 04:33:55,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 04:33:55,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 04:33:55,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 04:33:55,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 04:33:55,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 04:33:55,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 04:33:55,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 04:33:55,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 04:33:55,971 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 04:33:55,974 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 04:33:55,974 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 04:33:55,975 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 04:33:55,975 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 04:33:55,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 04:33:55,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 04:33:55,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 04:33:55,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 04:33:55,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 04:33:55,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 04:33:55,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:33:55,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 04:33:55,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 04:33:55,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 04:33:55,977 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 04:33:55,977 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 04:33:55,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 04:33:55,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 04:33:55,978 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 04:33:55,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 04:33:55,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 04:33:55,978 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 04:33:55,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 04:33:56,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 04:33:56,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 04:33:56,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 04:33:56,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 04:33:56,179 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 04:33:56,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c [2023-12-25 04:33:57,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 04:33:57,256 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 04:33:57,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c [2023-12-25 04:33:57,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828b6708e/f0ac70d5e8f34e8699bf29af00aa5724/FLAG0384df9c5 [2023-12-25 04:33:57,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828b6708e/f0ac70d5e8f34e8699bf29af00aa5724 [2023-12-25 04:33:57,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 04:33:57,275 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 04:33:57,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 04:33:57,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 04:33:57,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 04:33:57,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f083234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57, skipping insertion in model container [2023-12-25 04:33:57,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 04:33:57,396 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c[1175,1188] [2023-12-25 04:33:57,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:33:57,423 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 04:33:57,431 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c[1175,1188] [2023-12-25 04:33:57,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:33:57,444 INFO L206 MainTranslator]: Completed translation [2023-12-25 04:33:57,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57 WrapperNode [2023-12-25 04:33:57,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 04:33:57,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 04:33:57,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 04:33:57,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 04:33:57,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,465 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-12-25 04:33:57,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 04:33:57,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 04:33:57,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 04:33:57,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 04:33:57,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,493 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]. [2023-12-25 04:33:57,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 04:33:57,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 04:33:57,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 04:33:57,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 04:33:57,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (1/1) ... [2023-12-25 04:33:57,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:33:57,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 04:33:57,541 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) [2023-12-25 04:33:57,561 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 [2023-12-25 04:33:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 04:33:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 04:33:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 04:33:57,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 04:33:57,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 04:33:57,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 04:33:57,614 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 04:33:57,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 04:33:57,869 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 04:33:57,906 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 04:33:57,909 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 04:33:57,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:33:57 BoogieIcfgContainer [2023-12-25 04:33:57,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 04:33:57,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 04:33:57,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 04:33:57,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 04:33:57,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 04:33:57" (1/3) ... [2023-12-25 04:33:57,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f96d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:33:57, skipping insertion in model container [2023-12-25 04:33:57,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:33:57" (2/3) ... [2023-12-25 04:33:57,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f96d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:33:57, skipping insertion in model container [2023-12-25 04:33:57,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:33:57" (3/3) ... [2023-12-25 04:33:57,915 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound2.c [2023-12-25 04:33:57,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 04:33:57,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 04:33:57,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 04:33:57,972 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;@5e3f750, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 04:33:57,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 04:33:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:33:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-25 04:33:57,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:33:57,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:33:57,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:33:57,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:33:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -818250469, now seen corresponding path program 1 times [2023-12-25 04:33:57,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:33:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868385531] [2023-12-25 04:33:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:33:57,996 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 [2023-12-25 04:33:57,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:33:57,999 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) [2023-12-25 04:33:58,014 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 [2023-12-25 04:33:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:33:58,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 04:33:58,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:33:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:33:58,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:33:58,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:33:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868385531] [2023-12-25 04:33:58,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868385531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:33:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:33:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 04:33:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215824842] [2023-12-25 04:33:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:33:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 04:33:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:33:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 04:33:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:33:58,104 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:33:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:33:58,131 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2023-12-25 04:33:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 04:33:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-25 04:33:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:33:58,137 INFO L225 Difference]: With dead ends: 34 [2023-12-25 04:33:58,138 INFO L226 Difference]: Without dead ends: 16 [2023-12-25 04:33:58,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:33:58,143 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 04:33:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:33:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-25 04:33:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-25 04:33:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:33:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-12-25 04:33:58,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2023-12-25 04:33:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:33:58,167 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-12-25 04:33:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:33:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-12-25 04:33:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 04:33:58,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:33:58,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:33:58,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 04:33:58,371 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 [2023-12-25 04:33:58,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:33:58,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:33:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1011676302, now seen corresponding path program 1 times [2023-12-25 04:33:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:33:58,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386715326] [2023-12-25 04:33:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:33:58,375 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 [2023-12-25 04:33:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:33:58,376 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) [2023-12-25 04:33:58,400 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 [2023-12-25 04:33:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:33:58,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 04:33:58,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:33:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:33:58,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:33:58,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:33:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386715326] [2023-12-25 04:33:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386715326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:33:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:33:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 04:33:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737200946] [2023-12-25 04:33:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:33:58,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 04:33:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:33:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 04:33:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 04:33:58,498 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-25 04:33:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:33:58,524 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-12-25 04:33:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 04:33:58,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-25 04:33:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:33:58,526 INFO L225 Difference]: With dead ends: 25 [2023-12-25 04:33:58,526 INFO L226 Difference]: Without dead ends: 18 [2023-12-25 04:33:58,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 04:33:58,528 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 04:33:58,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:33:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-25 04:33:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-25 04:33:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:33:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-25 04:33:58,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2023-12-25 04:33:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:33:58,535 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-25 04:33:58,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-25 04:33:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-25 04:33:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 04:33:58,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:33:58,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:33:58,541 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 [2023-12-25 04:33:58,739 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 [2023-12-25 04:33:58,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:33:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:33:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1009888842, now seen corresponding path program 1 times [2023-12-25 04:33:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:33:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221590667] [2023-12-25 04:33:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:33:58,741 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 [2023-12-25 04:33:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:33:58,742 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) [2023-12-25 04:33:58,748 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 [2023-12-25 04:33:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:33:58,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 04:33:58,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:33:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:33:59,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:33:59,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:33:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221590667] [2023-12-25 04:33:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221590667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:33:59,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:33:59,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 04:33:59,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26736947] [2023-12-25 04:33:59,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:33:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:33:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:33:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:33:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 04:33:59,050 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-12-25 04:33:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:33:59,827 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-12-25 04:33:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 04:33:59,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-25 04:33:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:33:59,828 INFO L225 Difference]: With dead ends: 29 [2023-12-25 04:33:59,828 INFO L226 Difference]: Without dead ends: 27 [2023-12-25 04:33:59,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 04:33:59,829 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 04:33:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 04:33:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-25 04:33:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-12-25 04:33:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:33:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-25 04:33:59,834 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2023-12-25 04:33:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:33:59,834 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-25 04:33:59,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-12-25 04:33:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-25 04:33:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 04:33:59,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:33:59,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:33:59,844 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 [2023-12-25 04:34:00,035 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 [2023-12-25 04:34:00,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:34:00,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:34:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 292477645, now seen corresponding path program 1 times [2023-12-25 04:34:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:34:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886516981] [2023-12-25 04:34:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:34:00,037 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 [2023-12-25 04:34:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:34:00,039 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) [2023-12-25 04:34:00,041 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 [2023-12-25 04:34:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:34:00,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 04:34:00,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:34:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:34:00,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:34:00,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:34:00,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886516981] [2023-12-25 04:34:00,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886516981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:34:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:34:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 04:34:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317805856] [2023-12-25 04:34:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:34:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:34:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:34:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:34:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 04:34:00,273 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:34:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:34:00,622 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-12-25 04:34:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 04:34:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-25 04:34:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:34:00,623 INFO L225 Difference]: With dead ends: 33 [2023-12-25 04:34:00,623 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 04:34:00,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 04:34:00,624 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 04:34:00,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 43 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 04:34:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 04:34:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 04:34:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:34:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-25 04:34:00,630 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2023-12-25 04:34:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:34:00,630 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-25 04:34:00,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:34:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-25 04:34:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-25 04:34:00,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:34:00,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:34:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 04:34:00,835 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 [2023-12-25 04:34:00,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:34:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:34:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966870, now seen corresponding path program 1 times [2023-12-25 04:34:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:34:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694427348] [2023-12-25 04:34:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:34:00,837 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 [2023-12-25 04:34:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:34:00,838 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) [2023-12-25 04:34:00,839 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 [2023-12-25 04:34:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:34:00,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 04:34:00,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:34:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:34:00,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:34:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:34:01,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:34:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694427348] [2023-12-25 04:34:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694427348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 04:34:01,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:34:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-25 04:34:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115031825] [2023-12-25 04:34:01,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:34:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 04:34:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:34:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 04:34:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 04:34:01,044 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:34:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:34:01,455 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2023-12-25 04:34:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 04:34:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-12-25 04:34:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:34:01,456 INFO L225 Difference]: With dead ends: 35 [2023-12-25 04:34:01,456 INFO L226 Difference]: Without dead ends: 28 [2023-12-25 04:34:01,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-25 04:34:01,457 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 04:34:01,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 04:34:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-25 04:34:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-25 04:34:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:34:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-12-25 04:34:01,461 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2023-12-25 04:34:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:34:01,461 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-12-25 04:34:01,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:34:01,462 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-12-25 04:34:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-25 04:34:01,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:34:01,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:34:01,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-25 04:34:01,666 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 [2023-12-25 04:34:01,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:34:01,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:34:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1085754330, now seen corresponding path program 1 times [2023-12-25 04:34:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:34:01,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729344522] [2023-12-25 04:34:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:34:01,668 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 [2023-12-25 04:34:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:34:01,669 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) [2023-12-25 04:34:01,670 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 Received shutdown request... [2023-12-25 04:48:49,067 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 [2023-12-25 04:48:49,067 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 04:48:50,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 04:48:50,267 WARN L435 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)] Forcibly destroying the process [2023-12-25 04:48:50,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 137 [2023-12-25 04:48:50,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 04:48:50,302 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 04:48:50,302 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [729344522] and IpTcStrategyModuleCvc4 [1962692540]. [2023-12-25 04:48:50,305 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-25 04:48:50,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 04:48:50,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 04:48:50 BoogieIcfgContainer [2023-12-25 04:48:50,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 04:48:50,316 INFO L158 Benchmark]: Toolchain (without parser) took 893041.63ms. Allocated memory is still 288.4MB. Free memory was 245.7MB in the beginning and 125.6MB in the end (delta: 120.1MB). Peak memory consumption was 120.6MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,316 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 04:48:50,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.60ms. Allocated memory is still 288.4MB. Free memory was 245.7MB in the beginning and 234.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.46ms. Allocated memory is still 288.4MB. Free memory was 234.1MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,317 INFO L158 Benchmark]: Boogie Preprocessor took 49.30ms. Allocated memory is still 288.4MB. Free memory was 232.6MB in the beginning and 231.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,317 INFO L158 Benchmark]: RCFGBuilder took 393.91ms. Allocated memory is still 288.4MB. Free memory was 230.5MB in the beginning and 217.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,317 INFO L158 Benchmark]: TraceAbstraction took 892405.15ms. Allocated memory is still 288.4MB. Free memory was 217.4MB in the beginning and 125.6MB in the end (delta: 91.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2023-12-25 04:48:50,318 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.60ms. Allocated memory is still 288.4MB. Free memory was 245.7MB in the beginning and 234.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.46ms. Allocated memory is still 288.4MB. Free memory was 234.1MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.30ms. Allocated memory is still 288.4MB. Free memory was 232.6MB in the beginning and 231.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 393.91ms. Allocated memory is still 288.4MB. Free memory was 230.5MB in the beginning and 217.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 892405.15ms. Allocated memory is still 288.4MB. Free memory was 217.4MB in the beginning and 125.6MB in the end (delta: 91.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 23). Cancelled while NwaCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [729344522] and IpTcStrategyModuleCvc4 [1962692540]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 892.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 75 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 73 ConstructedInterpolants, 4 QuantifiedInterpolants, 221 SizeOfPredicates, 6 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown