/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-while_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 23:05:29,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 23:05:29,231 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 23:05:29,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 23:05:29,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 23:05:29,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 23:05:29,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 23:05:29,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 23:05:29,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 23:05:29,253 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 23:05:29,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 23:05:29,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 23:05:29,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 23:05:29,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 23:05:29,255 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 23:05:29,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 23:05:29,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 23:05:29,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 23:05:29,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 23:05:29,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 23:05:29,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 23:05:29,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 23:05:29,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 23:05:29,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 23:05:29,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 23:05:29,258 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 23:05:29,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 23:05:29,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 23:05:29,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 23:05:29,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 23:05:29,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 23:05:29,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 23:05:29,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:05:29,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 23:05:29,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 23:05:29,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 23:05:29,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 23:05:29,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 23:05:29,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 23:05:29,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 23:05:29,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 23:05:29,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 23:05:29,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 23:05:29,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 23:05:29,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 23:05:29,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 23:05:29,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 23:05:29,456 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 23:05:29,456 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 23:05:29,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2023-12-20 23:05:30,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 23:05:30,819 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 23:05:30,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2023-12-20 23:05:30,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcf19a48/3299022895b140b4871f4bfdc63006e9/FLAG778687b99 [2023-12-20 23:05:30,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcf19a48/3299022895b140b4871f4bfdc63006e9 [2023-12-20 23:05:30,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 23:05:30,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 23:05:30,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 23:05:30,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 23:05:30,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 23:05:30,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:05:30" (1/1) ... [2023-12-20 23:05:30,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304abb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:30, skipping insertion in model container [2023-12-20 23:05:30,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:05:30" (1/1) ... [2023-12-20 23:05:30,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 23:05:30,955 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-while_file-42.i[915,928] [2023-12-20 23:05:30,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:05:30,986 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 23:05:30,993 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-while_file-42.i[915,928] [2023-12-20 23:05:31,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:05:31,018 INFO L206 MainTranslator]: Completed translation [2023-12-20 23:05:31,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31 WrapperNode [2023-12-20 23:05:31,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 23:05:31,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 23:05:31,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 23:05:31,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 23:05:31,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,065 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2023-12-20 23:05:31,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 23:05:31,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 23:05:31,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 23:05:31,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 23:05:31,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,086 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 23:05:31,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 23:05:31,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 23:05:31,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 23:05:31,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 23:05:31,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (1/1) ... [2023-12-20 23:05:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:05:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:05:31,145 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 23:05:31,163 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 23:05:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 23:05:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 23:05:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 23:05:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 23:05:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 23:05:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 23:05:31,247 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 23:05:31,250 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 23:05:31,442 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 23:05:31,464 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 23:05:31,465 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 23:05:31,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:05:31 BoogieIcfgContainer [2023-12-20 23:05:31,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 23:05:31,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 23:05:31,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 23:05:31,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 23:05:31,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:05:30" (1/3) ... [2023-12-20 23:05:31,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1655a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:05:31, skipping insertion in model container [2023-12-20 23:05:31,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:05:31" (2/3) ... [2023-12-20 23:05:31,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1655a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:05:31, skipping insertion in model container [2023-12-20 23:05:31,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:05:31" (3/3) ... [2023-12-20 23:05:31,470 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-42.i [2023-12-20 23:05:31,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 23:05:31,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 23:05:31,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 23:05:31,512 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;@3ea90d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 23:05:31,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 23:05:31,515 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 23:05:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 23:05:31,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:05:31,523 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 23:05:31,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:05:31,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:05:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash -619036675, now seen corresponding path program 1 times [2023-12-20 23:05:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:05:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597718607] [2023-12-20 23:05:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:05:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:05:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:05:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:05:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:05:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 23:05:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:05:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 23:05:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:05:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 23:05:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:05:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:05:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 23:05:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 23:05:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 23:05:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 23:05:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 23:05:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:31,736 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 23:05:31,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:05:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597718607] [2023-12-20 23:05:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597718607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:05:31,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:05:31,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 23:05:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761569411] [2023-12-20 23:05:31,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:05:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 23:05:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:05:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 23:05:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:05:31,760 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 23:05:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:05:31,801 INFO L93 Difference]: Finished difference Result 79 states and 137 transitions. [2023-12-20 23:05:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 23:05:31,803 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 23:05:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:05:31,809 INFO L225 Difference]: With dead ends: 79 [2023-12-20 23:05:31,809 INFO L226 Difference]: Without dead ends: 39 [2023-12-20 23:05:31,812 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 23:05:31,816 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:05:31,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:05:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-20 23:05:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-20 23:05:31,849 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 23:05:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-12-20 23:05:31,853 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 92 [2023-12-20 23:05:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:05:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-12-20 23:05:31,854 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 23:05:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-12-20 23:05:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 23:05:31,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:05:31,859 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 23:05:31,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 23:05:31,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:05:31,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:05:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1717090753, now seen corresponding path program 1 times [2023-12-20 23:05:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:05:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965663534] [2023-12-20 23:05:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:05:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:05:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:05:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:05:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:05:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 23:05:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:05:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 23:05:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:05:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 23:05:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:05:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:05:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 23:05:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 23:05:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 23:05:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 23:05:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 23:05:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:32,156 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 23:05:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:05:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965663534] [2023-12-20 23:05:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965663534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:05:32,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:05:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 23:05:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031523167] [2023-12-20 23:05:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:05:32,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 23:05:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:05:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 23:05:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 23:05:32,166 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 23:05:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:05:32,210 INFO L93 Difference]: Finished difference Result 107 states and 158 transitions. [2023-12-20 23:05:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 23:05:32,211 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 23:05:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:05:32,214 INFO L225 Difference]: With dead ends: 107 [2023-12-20 23:05:32,215 INFO L226 Difference]: Without dead ends: 69 [2023-12-20 23:05:32,215 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 23:05:32,216 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:05:32,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 135 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:05:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-20 23:05:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2023-12-20 23:05:32,229 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 23:05:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2023-12-20 23:05:32,234 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 92 [2023-12-20 23:05:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:05:32,236 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2023-12-20 23:05:32,237 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 23:05:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2023-12-20 23:05:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 23:05:32,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:05:32,242 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 23:05:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 23:05:32,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:05:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:05:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1717031171, now seen corresponding path program 1 times [2023-12-20 23:05:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:05:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133243409] [2023-12-20 23:05:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:05:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:05:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:05:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:05:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:05:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 23:05:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:05:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 23:05:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:05:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 23:05:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:05:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:05:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 23:05:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 23:05:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 23:05:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 23:05:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 23:05:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,395 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 23:05:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:05:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133243409] [2023-12-20 23:05:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133243409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 23:05:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276166344] [2023-12-20 23:05:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:05:34,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:05:34,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:05:34,398 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 23:05:34,425 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 23:05:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:05:34,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 23:05:34,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:14:15,687 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 23:14:15,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-20 23:20:09,670 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:20:09,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 23:20:09,705 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 23:20:09,705 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 23:20:09,875 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 23:20:09,875 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 ∧-48-4-3-4-3-4-3-4-3-4-3-4-3-4-3-5-3-5-3-5-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-3-3-2-3-2-2-1 context. [2023-12-20 23:20:09,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-20 23:20:09,881 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:20:09,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:20:09 BoogieIcfgContainer [2023-12-20 23:20:09,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:20:09,883 INFO L158 Benchmark]: Toolchain (without parser) took 879044.20ms. Allocated memory was 364.9MB in the beginning and 1.1GB in the end (delta: 747.6MB). Free memory was 310.5MB in the beginning and 1.0GB in the end (delta: -713.1MB). Peak memory consumption was 656.9MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,883 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 197.1MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:20:09,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.23ms. Allocated memory is still 364.9MB. Free memory was 310.5MB in the beginning and 298.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.31ms. Allocated memory is still 364.9MB. Free memory was 298.0MB in the beginning and 295.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,883 INFO L158 Benchmark]: Boogie Preprocessor took 30.17ms. Allocated memory is still 364.9MB. Free memory was 295.3MB in the beginning and 292.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,884 INFO L158 Benchmark]: RCFGBuilder took 368.77ms. Allocated memory is still 364.9MB. Free memory was 292.2MB in the beginning and 273.8MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,884 INFO L158 Benchmark]: TraceAbstraction took 878415.75ms. Allocated memory was 364.9MB in the beginning and 1.1GB in the end (delta: 747.6MB). Free memory was 273.3MB in the beginning and 1.0GB in the end (delta: -750.3MB). Peak memory consumption was 619.2MB. Max. memory is 8.0GB. [2023-12-20 23:20:09,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 197.1MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.23ms. Allocated memory is still 364.9MB. Free memory was 310.5MB in the beginning and 298.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.31ms. Allocated memory is still 364.9MB. Free memory was 298.0MB in the beginning and 295.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.17ms. Allocated memory is still 364.9MB. Free memory was 295.3MB in the beginning and 292.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 368.77ms. Allocated memory is still 364.9MB. Free memory was 292.2MB in the beginning and 273.8MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 878415.75ms. Allocated memory was 364.9MB in the beginning and 1.1GB in the end (delta: 747.6MB). Free memory was 273.3MB in the beginning and 1.0GB in the end (delta: -750.3MB). Peak memory consumption was 619.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 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 ∧-48-4-3-4-3-4-3-4-3-4-3-4-3-4-3-5-3-5-3-5-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-3-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.4s, 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, 189 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 147 mSDtfsCounter, 15 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, 0.1s SatisfiabilityAnalysisTime, 0.3s 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