/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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-91.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 13:57:53,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 13:57:54,065 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 13:57:54,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 13:57:54,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 13:57:54,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 13:57:54,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 13:57:54,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 13:57:54,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 13:57:54,095 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 13:57:54,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 13:57:54,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 13:57:54,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 13:57:54,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 13:57:54,098 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 13:57:54,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 13:57:54,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 13:57:54,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 13:57:54,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 13:57:54,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 13:57:54,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 13:57:54,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 13:57:54,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 13:57:54,100 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 13:57:54,100 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 13:57:54,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 13:57:54,101 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 13:57:54,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 13:57:54,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 13:57:54,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 13:57:54,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 13:57:54,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 13:57:54,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 13:57:54,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 13:57:54,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:57:54,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 13:57:54,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 13:57:54,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 13:57:54,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 13:57:54,104 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 13:57:54,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 13:57:54,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 13:57:54,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 13:57:54,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 13:57:54,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 13:57:54,307 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 13:57:54,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-91.i [2023-12-16 13:57:55,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 13:57:55,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 13:57:55,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-91.i [2023-12-16 13:57:55,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d404546ae/f7a218c4dd184322ad6190f48baca5bf/FLAGb6ca5fd40 [2023-12-16 13:57:55,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d404546ae/f7a218c4dd184322ad6190f48baca5bf [2023-12-16 13:57:55,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 13:57:55,436 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 13:57:55,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 13:57:55,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 13:57:55,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 13:57:55,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9a85a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55, skipping insertion in model container [2023-12-16 13:57:55,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 13:57:55,553 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-91.i[915,928] [2023-12-16 13:57:55,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:57:55,585 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 13:57:55,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-91.i[915,928] [2023-12-16 13:57:55,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:57:55,615 INFO L206 MainTranslator]: Completed translation [2023-12-16 13:57:55,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55 WrapperNode [2023-12-16 13:57:55,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 13:57:55,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 13:57:55,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 13:57:55,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 13:57:55,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,648 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-12-16 13:57:55,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 13:57:55,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 13:57:55,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 13:57:55,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 13:57:55,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,680 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 13:57:55,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 13:57:55,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 13:57:55,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 13:57:55,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 13:57:55,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (1/1) ... [2023-12-16 13:57:55,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:57:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 13:57:55,740 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 13:57:55,742 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 13:57:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 13:57:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 13:57:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 13:57:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 13:57:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 13:57:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 13:57:55,811 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 13:57:55,812 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 13:57:56,087 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 13:57:56,152 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 13:57:56,152 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 13:57:56,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:56 BoogieIcfgContainer [2023-12-16 13:57:56,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 13:57:56,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 13:57:56,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 13:57:56,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 13:57:56,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:57:55" (1/3) ... [2023-12-16 13:57:56,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44219b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:56, skipping insertion in model container [2023-12-16 13:57:56,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:55" (2/3) ... [2023-12-16 13:57:56,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44219b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:56, skipping insertion in model container [2023-12-16 13:57:56,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:56" (3/3) ... [2023-12-16 13:57:56,160 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-91.i [2023-12-16 13:57:56,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 13:57:56,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 13:57:56,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 13:57:56,212 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;@265df543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 13:57:56,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 13:57:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 13:57:56,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 13:57:56,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:57:56,222 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:57:56,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:57:56,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:57:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash 824074980, now seen corresponding path program 1 times [2023-12-16 13:57:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:57:56,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031925629] [2023-12-16 13:57:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:57:56,235 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 13:57:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:57:56,246 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 13:57:56,276 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 13:57:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:57:56,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 13:57:56,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:57:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 13:57:59,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:58:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 13:58:08,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:58:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031925629] [2023-12-16 13:58:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031925629] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 13:58:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 13:58:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 13:58:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426942058] [2023-12-16 13:58:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:58:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 13:58:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:58:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 13:58:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-16 13:58:08,896 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 13:58:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:58:13,744 INFO L93 Difference]: Finished difference Result 112 states and 184 transitions. [2023-12-16 13:58:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 13:58:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 69 [2023-12-16 13:58:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:58:13,754 INFO L225 Difference]: With dead ends: 112 [2023-12-16 13:58:13,754 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 13:58:13,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-12-16 13:58:13,759 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 102 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:58:13,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 162 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 13:58:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 13:58:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-12-16 13:58:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 13:58:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-12-16 13:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 69 [2023-12-16 13:58:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:58:13,793 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-12-16 13:58:13,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 13:58:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-12-16 13:58:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 13:58:13,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:58:13,795 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:58:13,806 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 [2023-12-16 13:58:14,006 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 13:58:14,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:58:14,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:58:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 825922022, now seen corresponding path program 1 times [2023-12-16 13:58:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:58:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213632168] [2023-12-16 13:58:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:58:14,008 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 13:58:14,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:58:14,010 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 13:58:14,012 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 13:58:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:58:14,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 13:58:14,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:58:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 13:58:16,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:58:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-16 13:58:21,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:58:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213632168] [2023-12-16 13:58:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213632168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 13:58:21,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 13:58:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-16 13:58:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426638932] [2023-12-16 13:58:21,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 13:58:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 13:58:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:58:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 13:58:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-16 13:58:21,964 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-16 13:58:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:58:30,108 INFO L93 Difference]: Finished difference Result 209 states and 279 transitions. [2023-12-16 13:58:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 13:58:30,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 69 [2023-12-16 13:58:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:58:30,112 INFO L225 Difference]: With dead ends: 209 [2023-12-16 13:58:30,112 INFO L226 Difference]: Without dead ends: 144 [2023-12-16 13:58:30,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=410, Invalid=1072, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 13:58:30,114 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 129 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:58:30,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 250 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 13:58:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-16 13:58:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 46. [2023-12-16 13:58:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 13:58:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-12-16 13:58:30,124 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 69 [2023-12-16 13:58:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:58:30,125 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-12-16 13:58:30,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-16 13:58:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-12-16 13:58:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 13:58:30,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:58:30,126 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:58:30,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 13:58:30,330 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 13:58:30,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:58:30,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:58:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -232664620, now seen corresponding path program 1 times [2023-12-16 13:58:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:58:30,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694621829] [2023-12-16 13:58:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:58:30,336 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 13:58:30,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:58:30,337 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 13:58:30,364 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 13:58:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:58:30,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 13:58:30,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:58:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 13:58:32,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:58:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 13:58:48,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:58:48,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694621829] [2023-12-16 13:58:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694621829] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 13:58:48,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 13:58:48,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-16 13:58:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473695007] [2023-12-16 13:58:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:58:48,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 13:58:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:58:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 13:58:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-16 13:58:48,223 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Received shutdown request... [2023-12-16 13:59:09,948 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 13:59:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 13:59:09,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-12-16 13:59:09,978 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-16 13:59:09,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 104 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-16 13:59:09,978 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 (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 13:59:09,980 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 13:59:09,985 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 [2023-12-16 13:59:10,180 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 13:59:10,181 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (46states) and FLOYD_HOARE automaton (currently 10 states, 8 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. [2023-12-16 13:59:10,184 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 13:59:10,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 13:59:10,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:59:10 BoogieIcfgContainer [2023-12-16 13:59:10,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 13:59:10,188 INFO L158 Benchmark]: Toolchain (without parser) took 74752.96ms. Allocated memory was 226.5MB in the beginning and 789.6MB in the end (delta: 563.1MB). Free memory was 178.6MB in the beginning and 739.9MB in the end (delta: -561.3MB). Peak memory consumption was 3.4MB. Max. memory is 8.0GB. [2023-12-16 13:59:10,189 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 13:59:10,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.32ms. Allocated memory is still 226.5MB. Free memory was 178.3MB in the beginning and 165.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 13:59:10,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.61ms. Allocated memory is still 226.5MB. Free memory was 165.4MB in the beginning and 163.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 13:59:10,189 INFO L158 Benchmark]: Boogie Preprocessor took 43.08ms. Allocated memory is still 226.5MB. Free memory was 163.6MB in the beginning and 161.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 13:59:10,190 INFO L158 Benchmark]: RCFGBuilder took 459.97ms. Allocated memory is still 226.5MB. Free memory was 161.0MB in the beginning and 143.4MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 13:59:10,190 INFO L158 Benchmark]: TraceAbstraction took 74033.07ms. Allocated memory was 226.5MB in the beginning and 789.6MB in the end (delta: 563.1MB). Free memory was 142.7MB in the beginning and 739.9MB in the end (delta: -597.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 13:59:10,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.32ms. Allocated memory is still 226.5MB. Free memory was 178.3MB in the beginning and 165.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.61ms. Allocated memory is still 226.5MB. Free memory was 165.4MB in the beginning and 163.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.08ms. Allocated memory is still 226.5MB. Free memory was 163.6MB in the beginning and 161.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 459.97ms. Allocated memory is still 226.5MB. Free memory was 161.0MB in the beginning and 143.4MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 74033.07ms. Allocated memory was 226.5MB in the beginning and 789.6MB in the end (delta: 563.1MB). Free memory was 142.7MB in the beginning and 739.9MB in the end (delta: -597.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (46states) and FLOYD_HOARE automaton (currently 10 states, 8 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.0s, OverallIterations: 3, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 295 mSDsluCounter, 516 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 363 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 796 IncrementalHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 153 mSDtfsCounter, 796 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=1, InterpolantAutomatonStates: 38, 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, 2 MinimizatonAttempts, 103 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 410 ConstructedInterpolants, 3 QuantifiedInterpolants, 3636 SizeOfPredicates, 51 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1296/1320 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