/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/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:52:17,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:52:17,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:52:17,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:52:17,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:52:17,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:52:17,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:52:17,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:52:17,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:52:17,779 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:52:17,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:52:17,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:52:17,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:52:17,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:52:17,780 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:52:17,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:52:17,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:52:17,780 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:52:17,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:52:17,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:52:17,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:52:17,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:52:17,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:52:17,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:52:17,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:52:17,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:52:17,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:52:17,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:52:17,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:52:17,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:52:17,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:52:17,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:52:17,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:52:17,784 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:52:17,785 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:52:17,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:52:17,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:52:17,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:52:17,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:52:17,936 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:52:17,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-12-16 16:52:18,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:52:19,129 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:52:19,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-12-16 16:52:19,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba969216e/3619f6208b514c14bcd43c72cbb631e8/FLAG247a92c63 [2023-12-16 16:52:19,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba969216e/3619f6208b514c14bcd43c72cbb631e8 [2023-12-16 16:52:19,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:52:19,161 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:52:19,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:52:19,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:52:19,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:52:19,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408dc2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19, skipping insertion in model container [2023-12-16 16:52:19,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:52:19,290 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/egcd3-ll_valuebound2.c[490,503] [2023-12-16 16:52:19,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:52:19,336 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:52:19,344 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/egcd3-ll_valuebound2.c[490,503] [2023-12-16 16:52:19,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:52:19,408 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:52:19,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19 WrapperNode [2023-12-16 16:52:19,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:52:19,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:52:19,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:52:19,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:52:19,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,432 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-12-16 16:52:19,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:52:19,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:52:19,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:52:19,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:52:19,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,457 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:52:19,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:52:19,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:52:19,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:52:19,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:52:19,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (1/1) ... [2023-12-16 16:52:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:52:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:52:19,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:52:19,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:52:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:52:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:52:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 16:52:19,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 16:52:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:52:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:52:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:52:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:52:19,601 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:52:19,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:52:19,861 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:52:19,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:52:19,878 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 16:52:19,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:19 BoogieIcfgContainer [2023-12-16 16:52:19,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:52:19,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:52:19,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:52:19,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:52:19,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:52:19" (1/3) ... [2023-12-16 16:52:19,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66828c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:19, skipping insertion in model container [2023-12-16 16:52:19,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:19" (2/3) ... [2023-12-16 16:52:19,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66828c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:19, skipping insertion in model container [2023-12-16 16:52:19,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:19" (3/3) ... [2023-12-16 16:52:19,884 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2023-12-16 16:52:19,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:52:19,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:52:19,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:52:19,935 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;@d924bd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:52:19,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:52:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 16:52:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 16:52:19,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:19,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:19,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:19,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash 67099435, now seen corresponding path program 1 times [2023-12-16 16:52:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:19,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857080792] [2023-12-16 16:52:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:19,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:19,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:19,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:19,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:52:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:20,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:52:20,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 16:52:20,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:20,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857080792] [2023-12-16 16:52:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857080792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:20,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:20,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:52:20,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687077304] [2023-12-16 16:52:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:20,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:52:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:52:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:52:20,199 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:20,233 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2023-12-16 16:52:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:52:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-16 16:52:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:20,239 INFO L225 Difference]: With dead ends: 62 [2023-12-16 16:52:20,239 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 16:52:20,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:52:20,245 INFO L413 NwaCegarLoop]: 39 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, 39 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 [2023-12-16 16:52:20,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:52:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 16:52:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 16:52:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 16:52:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-16 16:52:20,276 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 28 [2023-12-16 16:52:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:20,276 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-16 16:52:20,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-16 16:52:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 16:52:20,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:20,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:20,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:52:20,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:20,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:20,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1772608446, now seen corresponding path program 1 times [2023-12-16 16:52:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:20,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852496724] [2023-12-16 16:52:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:20,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:20,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:52:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:20,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:52:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:52:20,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:52:21,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852496724] [2023-12-16 16:52:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852496724] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:52:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:52:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-12-16 16:52:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704340326] [2023-12-16 16:52:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:52:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:52:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:52:21,072 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:21,541 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-12-16 16:52:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:52:21,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-12-16 16:52:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:21,547 INFO L225 Difference]: With dead ends: 39 [2023-12-16 16:52:21,547 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 16:52:21,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 16:52:21,548 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:21,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:52:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 16:52:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-16 16:52:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 16:52:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-16 16:52:21,554 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 29 [2023-12-16 16:52:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:21,555 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-16 16:52:21,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-16 16:52:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 16:52:21,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:21,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:21,575 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:21,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:21,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:21,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1072684582, now seen corresponding path program 1 times [2023-12-16 16:52:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559480640] [2023-12-16 16:52:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:21,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:21,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:52:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:21,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 16:52:21,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:52:22,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 16:52:26,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559480640] [2023-12-16 16:52:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559480640] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:52:26,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:52:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-16 16:52:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623808117] [2023-12-16 16:52:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:26,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:52:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:52:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:52:26,792 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:31,011 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2023-12-16 16:52:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:52:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-12-16 16:52:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:31,037 INFO L225 Difference]: With dead ends: 48 [2023-12-16 16:52:31,037 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 16:52:31,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:52:31,038 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:31,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 125 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 16:52:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 16:52:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-12-16 16:52:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 16:52:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2023-12-16 16:52:31,049 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2023-12-16 16:52:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:31,049 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2023-12-16 16:52:31,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 16:52:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2023-12-16 16:52:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 16:52:31,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:31,050 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:31,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:31,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash 581538888, now seen corresponding path program 1 times [2023-12-16 16:52:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511774708] [2023-12-16 16:52:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:31,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:31,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:31,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:52:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:31,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:52:31,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:52:32,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:52:32,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511774708] [2023-12-16 16:52:32,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511774708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:52:32,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:52:32,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-16 16:52:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754074502] [2023-12-16 16:52:32,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:52:32,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:52:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:52:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:52:32,642 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 16:52:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:37,350 INFO L93 Difference]: Finished difference Result 113 states and 161 transitions. [2023-12-16 16:52:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 16:52:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2023-12-16 16:52:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:37,361 INFO L225 Difference]: With dead ends: 113 [2023-12-16 16:52:37,361 INFO L226 Difference]: Without dead ends: 106 [2023-12-16 16:52:37,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-12-16 16:52:37,366 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 174 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:37,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 258 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 16:52:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-16 16:52:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 52. [2023-12-16 16:52:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 16:52:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2023-12-16 16:52:37,387 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 34 [2023-12-16 16:52:37,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:37,387 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2023-12-16 16:52:37,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 16:52:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2023-12-16 16:52:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 16:52:37,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:37,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:37,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 16:52:37,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:37,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1534715754, now seen corresponding path program 1 times [2023-12-16 16:52:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134094987] [2023-12-16 16:52:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:37,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:37,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:37,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:52:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:37,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 16:52:37,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:52:38,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 16:52:49,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:49,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134094987] [2023-12-16 16:52:49,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134094987] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:52:49,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:52:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-12-16 16:52:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601321686] [2023-12-16 16:52:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:52:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:52:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:52:49,547 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 16:52:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:58,687 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2023-12-16 16:52:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:52:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-12-16 16:52:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:58,723 INFO L225 Difference]: With dead ends: 60 [2023-12-16 16:52:58,723 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 16:52:58,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:52:58,724 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:58,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-16 16:52:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 16:52:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-12-16 16:52:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 16:52:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2023-12-16 16:52:58,742 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 37 [2023-12-16 16:52:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2023-12-16 16:52:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 16:52:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2023-12-16 16:52:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 16:52:58,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:58,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:58,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:58,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:58,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433772, now seen corresponding path program 1 times [2023-12-16 16:52:58,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833308046] [2023-12-16 16:52:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:58,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:58,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:58,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:58,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:52:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:59,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 16:52:59,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:53:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 16:53:01,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 16:53:38,883 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 [2023-12-16 16:53:38,912 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:53:38,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:53:38,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:53:39,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:39,113 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. [2023-12-16 16:53:39,116 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 16:53:39,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:53:39,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:53:39 BoogieIcfgContainer [2023-12-16 16:53:39,119 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:53:39,119 INFO L158 Benchmark]: Toolchain (without parser) took 79958.66ms. Allocated memory was 213.9MB in the beginning and 343.9MB in the end (delta: 130.0MB). Free memory was 146.4MB in the beginning and 176.2MB in the end (delta: -29.7MB). Peak memory consumption was 100.5MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 213.9MB. Free memory was 163.9MB in the beginning and 163.7MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.77ms. Allocated memory was 213.9MB in the beginning and 265.3MB in the end (delta: 51.4MB). Free memory was 146.2MB in the beginning and 233.0MB in the end (delta: -86.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.03ms. Allocated memory is still 265.3MB. Free memory was 233.0MB in the beginning and 231.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: Boogie Preprocessor took 40.06ms. Allocated memory is still 265.3MB. Free memory was 231.5MB in the beginning and 229.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: RCFGBuilder took 398.74ms. Allocated memory is still 265.3MB. Free memory was 229.4MB in the beginning and 215.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,120 INFO L158 Benchmark]: TraceAbstraction took 79239.03ms. Allocated memory was 265.3MB in the beginning and 343.9MB in the end (delta: 78.6MB). Free memory was 214.7MB in the beginning and 176.2MB in the end (delta: 38.6MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. [2023-12-16 16:53:39,121 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 213.9MB. Free memory was 163.9MB in the beginning and 163.7MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.77ms. Allocated memory was 213.9MB in the beginning and 265.3MB in the end (delta: 51.4MB). Free memory was 146.2MB in the beginning and 233.0MB in the end (delta: -86.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.03ms. Allocated memory is still 265.3MB. Free memory was 233.0MB in the beginning and 231.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.06ms. Allocated memory is still 265.3MB. Free memory was 231.5MB in the beginning and 229.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 398.74ms. Allocated memory is still 265.3MB. Free memory was 229.4MB in the beginning and 215.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 79239.03ms. Allocated memory was 265.3MB in the beginning and 343.9MB in the end (delta: 78.6MB). Free memory was 214.7MB in the beginning and 176.2MB in the end (delta: 38.6MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 16.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 215 mSDsluCounter, 660 SdHoareTripleChecker+Invalid, 15.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 487 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 253 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 173 mSDtfsCounter, 253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 283 ConstructedInterpolants, 9 QuantifiedInterpolants, 1115 SizeOfPredicates, 17 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 190/224 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