/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/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 00:27:32,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 00:27:32,733 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 00:27:32,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 00:27:32,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 00:27:32,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 00:27:32,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 00:27:32,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 00:27:32,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 00:27:32,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 00:27:32,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 00:27:32,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 00:27:32,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 00:27:32,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 00:27:32,764 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 00:27:32,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 00:27:32,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 00:27:32,765 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 00:27:32,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 00:27:32,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 00:27:32,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 00:27:32,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 00:27:32,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 00:27:32,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 00:27:32,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:27:32,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 00:27:32,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 00:27:32,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 00:27:32,769 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 00:27:32,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 00:27:32,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 00:27:32,770 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 00:27:32,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 00:27:32,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 00:27:32,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 00:27:32,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 00:27:32,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 00:27:32,933 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 00:27:32,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c [2023-12-25 00:27:33,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 00:27:34,009 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 00:27:34,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c [2023-12-25 00:27:34,016 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca07ab185/b2c59dd8abfd4281a4bfb93850eb826c/FLAG897ad6348 [2023-12-25 00:27:34,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca07ab185/b2c59dd8abfd4281a4bfb93850eb826c [2023-12-25 00:27:34,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 00:27:34,030 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 00:27:34,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 00:27:34,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 00:27:34,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 00:27:34,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcffc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34, skipping insertion in model container [2023-12-25 00:27:34,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 00:27:34,181 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/lcm1.c[552,565] [2023-12-25 00:27:34,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:27:34,209 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 00:27:34,224 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/lcm1.c[552,565] [2023-12-25 00:27:34,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:27:34,249 INFO L206 MainTranslator]: Completed translation [2023-12-25 00:27:34,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34 WrapperNode [2023-12-25 00:27:34,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 00:27:34,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 00:27:34,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 00:27:34,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 00:27:34,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,294 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2023-12-25 00:27:34,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 00:27:34,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 00:27:34,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 00:27:34,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 00:27:34,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,322 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-25 00:27:34,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 00:27:34,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 00:27:34,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 00:27:34,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 00:27:34,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (1/1) ... [2023-12-25 00:27:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:27:34,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 00:27:34,358 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 00:27:34,377 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 00:27:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 00:27:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 00:27:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 00:27:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-25 00:27:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-25 00:27:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 00:27:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 00:27:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 00:27:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 00:27:34,461 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 00:27:34,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 00:27:34,608 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 00:27:34,632 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 00:27:34,632 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-25 00:27:34,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:27:34 BoogieIcfgContainer [2023-12-25 00:27:34,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 00:27:34,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 00:27:34,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 00:27:34,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 00:27:34,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 12:27:34" (1/3) ... [2023-12-25 00:27:34,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e49e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:27:34, skipping insertion in model container [2023-12-25 00:27:34,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:27:34" (2/3) ... [2023-12-25 00:27:34,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e49e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:27:34, skipping insertion in model container [2023-12-25 00:27:34,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:27:34" (3/3) ... [2023-12-25 00:27:34,639 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1.c [2023-12-25 00:27:34,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 00:27:34,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 00:27:34,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 00:27:34,688 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;@27793b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 00:27:34,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 00:27:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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) [2023-12-25 00:27:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-25 00:27:34,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:27:34,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:27:34,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:27:34,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:27:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1424300200, now seen corresponding path program 1 times [2023-12-25 00:27:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:27:34,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947386702] [2023-12-25 00:27:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:27:34,715 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 00:27:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:27:34,718 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 00:27:34,719 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 00:27:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:27:34,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 00:27:34,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:27:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 00:27:34,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:27:34,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:27:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947386702] [2023-12-25 00:27:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947386702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:27:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:27:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 00:27:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587667012] [2023-12-25 00:27:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:27:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 00:27:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:27:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 00:27:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 00:27:34,844 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-12-25 00:27:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:27:34,873 INFO L93 Difference]: Finished difference Result 56 states and 98 transitions. [2023-12-25 00:27:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 00:27:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 27 [2023-12-25 00:27:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:27:34,881 INFO L225 Difference]: With dead ends: 56 [2023-12-25 00:27:34,881 INFO L226 Difference]: Without dead ends: 27 [2023-12-25 00:27:34,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 00:27:34,886 INFO L413 NwaCegarLoop]: 36 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, 36 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 00:27:34,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 00:27:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-25 00:27:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-25 00:27:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-12-25 00:27:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-25 00:27:34,921 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 27 [2023-12-25 00:27:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:27:34,922 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-25 00:27:34,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-12-25 00:27:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-25 00:27:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-25 00:27:34,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:27:34,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:27:34,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 00:27:35,128 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 00:27:35,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:27:35,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:27:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -729715928, now seen corresponding path program 1 times [2023-12-25 00:27:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:27:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503560367] [2023-12-25 00:27:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:27:35,133 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 00:27:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:27:35,134 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 00:27:35,136 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 00:27:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:27:35,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 00:27:35,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:27:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-25 00:27:35,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:27:35,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:27:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503560367] [2023-12-25 00:27:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503560367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:27:35,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:27:35,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 00:27:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803265935] [2023-12-25 00:27:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:27:35,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 00:27:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:27:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 00:27:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 00:27:35,389 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-12-25 00:27:39,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:27:43,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:27:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:27:44,012 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2023-12-25 00:27:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 00:27:44,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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 27 [2023-12-25 00:27:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:27:44,018 INFO L225 Difference]: With dead ends: 44 [2023-12-25 00:27:44,018 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 00:27:44,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 00:27:44,020 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-25 00:27:44,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 100 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2023-12-25 00:27:44,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 00:27:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-12-25 00:27:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-25 00:27:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2023-12-25 00:27:44,031 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 27 [2023-12-25 00:27:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:27:44,032 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2023-12-25 00:27:44,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-12-25 00:27:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2023-12-25 00:27:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 00:27:44,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:27:44,033 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] [2023-12-25 00:27:44,036 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 [2023-12-25 00:27:44,236 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 00:27:44,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:27:44,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:27:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash -506968250, now seen corresponding path program 1 times [2023-12-25 00:27:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:27:44,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529463976] [2023-12-25 00:27:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:27:44,238 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 00:27:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:27:44,239 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 00:27:44,239 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 00:28:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:28:57,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 00:28:57,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:28:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 00:28:57,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:28:57,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:28:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529463976] [2023-12-25 00:28:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529463976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:28:57,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:28:57,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 00:28:57,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172002379] [2023-12-25 00:28:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:28:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 00:28:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:28:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 00:28:57,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 00:28:57,539 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 12 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 00:29:01,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:29:05,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:29:09,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:29:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:29:10,270 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2023-12-25 00:29:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 00:29:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 33 [2023-12-25 00:29:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:29:10,272 INFO L225 Difference]: With dead ends: 48 [2023-12-25 00:29:10,272 INFO L226 Difference]: Without dead ends: 40 [2023-12-25 00:29:10,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-25 00:29:10,273 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:29:10,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 132 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2023-12-25 00:29:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-25 00:29:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-25 00:29:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-25 00:29:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-25 00:29:10,280 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 33 [2023-12-25 00:29:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:29:10,280 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-25 00:29:10,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 00:29:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-25 00:29:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 00:29:10,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:29:10,281 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] [2023-12-25 00:29:10,298 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 00:29:10,492 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 00:29:10,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:29:10,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:29:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1458011533, now seen corresponding path program 1 times [2023-12-25 00:29:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:29:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867715925] [2023-12-25 00:29:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:29:10,494 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 00:29:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:29:10,495 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 00:29:10,496 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 00:29:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:29:10,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 00:29:10,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:29:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 00:29:11,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:29:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 00:29:11,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:29:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867715925] [2023-12-25 00:29:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867715925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:29:11,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:29:11,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2023-12-25 00:29:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128473882] [2023-12-25 00:29:11,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:29:11,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 00:29:11,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:29:11,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 00:29:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 00:29:11,991 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-25 00:29:16,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:29:20,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:29:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:29:21,385 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-12-25 00:29:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 00:29:21,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-12-25 00:29:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:29:21,395 INFO L225 Difference]: With dead ends: 50 [2023-12-25 00:29:21,395 INFO L226 Difference]: Without dead ends: 48 [2023-12-25 00:29:21,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-25 00:29:21,396 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:29:21,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 97 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2023-12-25 00:29:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-25 00:29:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-25 00:29:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-25 00:29:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-12-25 00:29:21,408 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 34 [2023-12-25 00:29:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:29:21,408 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-12-25 00:29:21,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-25 00:29:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-12-25 00:29:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:29:21,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:29:21,410 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:29:21,419 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 00:29:21,613 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 00:29:21,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:29:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:29:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -903542949, now seen corresponding path program 1 times [2023-12-25 00:29:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:29:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642096275] [2023-12-25 00:29:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:29:21,615 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 00:29:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:29:21,616 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 00:29:21,617 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 Received shutdown request... [2023-12-25 00:42:23,068 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 00:42:23,068 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 00:42:24,085 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 00:42:24,269 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 (6)] Forcibly destroying the process [2023-12-25 00:42:24,302 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 137 [2023-12-25 00:42:24,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 00:42:24,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:42:24,305 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 42 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [642096275] and IpTcStrategyModuleCvc4 [1545858595]. [2023-12-25 00:42:24,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-25 00:42:24,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:42:24,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:42:24 BoogieIcfgContainer [2023-12-25 00:42:24,311 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:42:24,311 INFO L158 Benchmark]: Toolchain (without parser) took 890280.72ms. Allocated memory was 207.6MB in the beginning and 284.2MB in the end (delta: 76.5MB). Free memory was 143.8MB in the beginning and 146.8MB in the end (delta: -3.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,311 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 207.6MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:42:24,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.71ms. Allocated memory is still 207.6MB. Free memory was 143.8MB in the beginning and 131.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.72ms. Allocated memory is still 207.6MB. Free memory was 131.8MB in the beginning and 130.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,312 INFO L158 Benchmark]: Boogie Preprocessor took 38.22ms. Allocated memory is still 207.6MB. Free memory was 130.4MB in the beginning and 128.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,316 INFO L158 Benchmark]: RCFGBuilder took 298.56ms. Allocated memory was 207.6MB in the beginning and 284.2MB in the end (delta: 76.5MB). Free memory was 128.4MB in the beginning and 241.3MB in the end (delta: -112.8MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,317 INFO L158 Benchmark]: TraceAbstraction took 889676.34ms. Allocated memory is still 284.2MB. Free memory was 240.7MB in the beginning and 146.8MB in the end (delta: 93.9MB). Peak memory consumption was 93.4MB. Max. memory is 8.0GB. [2023-12-25 00:42:24,318 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 207.6MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.71ms. Allocated memory is still 207.6MB. Free memory was 143.8MB in the beginning and 131.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.72ms. Allocated memory is still 207.6MB. Free memory was 131.8MB in the beginning and 130.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.22ms. Allocated memory is still 207.6MB. Free memory was 130.4MB in the beginning and 128.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 298.56ms. Allocated memory was 207.6MB in the beginning and 284.2MB in the end (delta: 76.5MB). Free memory was 128.4MB in the beginning and 241.3MB in the end (delta: -112.8MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * TraceAbstraction took 889676.34ms. Allocated memory is still 284.2MB. Free memory was 240.7MB in the beginning and 146.8MB in the end (delta: 93.9MB). Peak memory consumption was 93.4MB. 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: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 42 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [642096275] and IpTcStrategyModuleCvc4 [1545858595]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 889.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 30.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 30.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 308 IncrementalHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 101 mSDtfsCounter, 308 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, InterpolantAutomatonStates: 29, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 73.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 10 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 124/126 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