/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:56:12,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:56:12,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:56:12,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:56:12,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:56:12,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:56:12,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:56:12,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:56:12,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:56:12,168 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:56:12,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:56:12,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:56:12,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:56:12,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:56:12,170 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:56:12,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:56:12,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:56:12,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:56:12,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:56:12,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:56:12,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:56:12,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:56:12,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:56:12,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:56:12,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:56:12,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:56:12,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:56:12,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:56:12,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:56:12,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:56:12,175 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:56:12,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:56:12,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:56:12,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:56:12,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:56:12,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:56:12,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:56:12,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:56:12,359 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:56:12,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-42.i [2023-12-20 22:56:13,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:56:13,425 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:56:13,425 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-42.i [2023-12-20 22:56:13,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39ef005d/553c772e7ab842fe93e9c97c9d70e038/FLAG40f370379 [2023-12-20 22:56:13,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39ef005d/553c772e7ab842fe93e9c97c9d70e038 [2023-12-20 22:56:13,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:56:13,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:56:13,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:56:13,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:56:13,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:56:13,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cb7b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13, skipping insertion in model container [2023-12-20 22:56:13,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:56:13,593 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-42.i[915,928] [2023-12-20 22:56:13,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:56:13,657 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:56:13,667 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-42.i[915,928] [2023-12-20 22:56:13,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:56:13,707 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:56:13,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13 WrapperNode [2023-12-20 22:56:13,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:56:13,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:56:13,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:56:13,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:56:13,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,761 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-12-20 22:56:13,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:56:13,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:56:13,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:56:13,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:56:13,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,796 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]. [2023-12-20 22:56:13,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:56:13,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:56:13,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:56:13,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:56:13,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (1/1) ... [2023-12-20 22:56:13,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:56:13,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:56:13,842 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) [2023-12-20 22:56:13,863 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 [2023-12-20 22:56:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:56:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:56:13,868 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:56:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:56:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:56:13,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:56:13,916 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:56:13,917 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:56:14,102 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:56:14,127 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:56:14,127 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:56:14,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:56:14 BoogieIcfgContainer [2023-12-20 22:56:14,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:56:14,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:56:14,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:56:14,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:56:14,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:56:13" (1/3) ... [2023-12-20 22:56:14,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22004cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:56:14, skipping insertion in model container [2023-12-20 22:56:14,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:56:13" (2/3) ... [2023-12-20 22:56:14,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22004cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:56:14, skipping insertion in model container [2023-12-20 22:56:14,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:56:14" (3/3) ... [2023-12-20 22:56:14,133 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-42.i [2023-12-20 22:56:14,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:56:14,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:56:14,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:56:14,181 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;@6008c2ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:56:14,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:56:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-20 22:56:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 22:56:14,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:56:14,192 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:56:14,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:56:14,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:56:14,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1456178210, now seen corresponding path program 1 times [2023-12-20 22:56:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:56:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637755493] [2023-12-20 22:56:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:56:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:56:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:56:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:56:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:56:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 22:56:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:56:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 22:56:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:56:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 22:56:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:56:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 22:56:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:56:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 22:56:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:56:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 22:56:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:56:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-20 22:56:14,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:56:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637755493] [2023-12-20 22:56:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637755493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:56:14,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:56:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:56:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327870461] [2023-12-20 22:56:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:56:14,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:56:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:56:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:56:14,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:56:14,547 INFO L87 Difference]: Start difference. First operand has 41 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-20 22:56:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:56:14,576 INFO L93 Difference]: Finished difference Result 81 states and 138 transitions. [2023-12-20 22:56:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:56:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2023-12-20 22:56:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:56:14,582 INFO L225 Difference]: With dead ends: 81 [2023-12-20 22:56:14,582 INFO L226 Difference]: Without dead ends: 39 [2023-12-20 22:56:14,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:56:14,586 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:56:14,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:56:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-20 22:56:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-20 22:56:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-20 22:56:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-12-20 22:56:14,623 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 92 [2023-12-20 22:56:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:56:14,623 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-12-20 22:56:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-20 22:56:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-12-20 22:56:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 22:56:14,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:56:14,628 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:56:14,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 22:56:14,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:56:14,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:56:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash 358124132, now seen corresponding path program 1 times [2023-12-20 22:56:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:56:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696823862] [2023-12-20 22:56:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:56:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:56:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:56:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:56:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:56:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 22:56:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:56:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 22:56:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:56:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 22:56:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:56:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 22:56:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:56:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 22:56:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:56:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 22:56:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:56:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-20 22:56:14,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:56:14,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696823862] [2023-12-20 22:56:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696823862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:56:14,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:56:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:56:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595885581] [2023-12-20 22:56:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:56:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:56:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:56:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:56:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:56:14,854 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-20 22:56:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:56:14,898 INFO L93 Difference]: Finished difference Result 107 states and 158 transitions. [2023-12-20 22:56:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:56:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 92 [2023-12-20 22:56:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:56:14,903 INFO L225 Difference]: With dead ends: 107 [2023-12-20 22:56:14,903 INFO L226 Difference]: Without dead ends: 69 [2023-12-20 22:56:14,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:56:14,905 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:56:14,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 134 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:56:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-20 22:56:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2023-12-20 22:56:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-20 22:56:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2023-12-20 22:56:14,925 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 92 [2023-12-20 22:56:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:56:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2023-12-20 22:56:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-20 22:56:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2023-12-20 22:56:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 22:56:14,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:56:14,927 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:56:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 22:56:14,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:56:14,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:56:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash 358183714, now seen corresponding path program 1 times [2023-12-20 22:56:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:56:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666255865] [2023-12-20 22:56:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:56:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:56:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:56:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:56:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:56:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 22:56:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:56:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 22:56:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:56:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 22:56:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:56:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 22:56:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:56:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 22:56:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:56:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 22:56:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:56:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:56:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:56:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666255865] [2023-12-20 22:56:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666255865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 22:56:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27478760] [2023-12-20 22:56:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:56:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:56:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:56:17,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:56:17,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:56:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:56:17,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 22:56:17,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:04:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 201 proven. 123 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-20 23:04:52,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-20 23:10:53,193 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:10:53,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 23:10:53,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 23:10:53,223 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 [2023-12-20 23:10:53,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:10:53,399 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 93 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-3-3-2-3-2-2-1 context. [2023-12-20 23:10:53,402 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-20 23:10:53,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:10:53,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:10:53 BoogieIcfgContainer [2023-12-20 23:10:53,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:10:53,406 INFO L158 Benchmark]: Toolchain (without parser) took 879963.98ms. Allocated memory was 354.4MB in the beginning and 886.0MB in the end (delta: 531.6MB). Free memory was 306.1MB in the beginning and 686.5MB in the end (delta: -380.4MB). Peak memory consumption was 521.3MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,406 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:10:53,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.44ms. Allocated memory is still 354.4MB. Free memory was 306.1MB in the beginning and 293.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.28ms. Allocated memory is still 354.4MB. Free memory was 293.1MB in the beginning and 290.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,407 INFO L158 Benchmark]: Boogie Preprocessor took 54.19ms. Allocated memory is still 354.4MB. Free memory was 290.8MB in the beginning and 287.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,407 INFO L158 Benchmark]: RCFGBuilder took 309.72ms. Allocated memory is still 354.4MB. Free memory was 287.6MB in the beginning and 269.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,407 INFO L158 Benchmark]: TraceAbstraction took 879276.27ms. Allocated memory was 354.4MB in the beginning and 886.0MB in the end (delta: 531.6MB). Free memory was 269.0MB in the beginning and 686.5MB in the end (delta: -417.5MB). Peak memory consumption was 484.6MB. Max. memory is 8.0GB. [2023-12-20 23:10:53,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.44ms. Allocated memory is still 354.4MB. Free memory was 306.1MB in the beginning and 293.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.28ms. Allocated memory is still 354.4MB. Free memory was 293.1MB in the beginning and 290.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.19ms. Allocated memory is still 354.4MB. Free memory was 290.8MB in the beginning and 287.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 309.72ms. Allocated memory is still 354.4MB. Free memory was 287.6MB in the beginning and 269.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 879276.27ms. Allocated memory was 354.4MB in the beginning and 886.0MB in the end (delta: 531.6MB). Free memory was 269.0MB in the beginning and 686.5MB in the end (delta: -417.5MB). Peak memory consumption was 484.6MB. 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 analyzing trace of length 93 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-3-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.2s, OverallIterations: 3, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 188 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 146 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 840/840 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